Widgets aren't being casted. how do I fix it?

Widgets aren't being casted. how do I fix it? - java

Whenever I click the sign in button in my app, it just crashes and shows an error. Here is my activity_sign_in.xml and my SignIn.java.
activity_sign_in.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#mipmap/background1"
tools:context=".SignIn">
<LinearLayout
android:orientation="vertical"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_centerInParent="true"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.rengwuxian.materialedittext.MaterialEditText
android:id="#+id/editPhone"
android:hint="Phone Number"
android:textColorHint="#android:color/white"
android:text="0988112456"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#android:color/white"
android:textSize="34sp"
android:inputType="phone"
app:met_baseColor="#android:color/white"
app:met_floatingLabel="highlight"
app:met_maxCharacters="11"
app:met_primaryColor="#android:color/white"
app:met_singleLineEllipsis="true"
/>
<com.rengwuxian.materialedittext.MaterialEditText
android:id="#+id/editPassword"
android:hint="Password"
android:textColorHint="#android:color/white"
android:text="IMF"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#android:color/white"
android:textSize="34sp"
android:inputType="textPassword"
app:met_baseColor="#android:color/white"
app:met_floatingLabel="highlight"
app:met_maxCharacters="11"
app:met_primaryColor="#android:color/white"
app:met_singleLineEllipsis="true"
/>
<LinearLayout
android:orientation="horizontal"
android:weightSum="2"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<CheckBox
android:id="#+id/ckbRemember"
style="#style/Material.Drawable.CheckBox"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="Remember Me"
android:gravity="center_vertical"
android:textColor="#android:color/white"
app:cbd_tickColor="#color/colorPrimaryDark"
app:cbd_strokeColor="#android:color/white"
/>
<TextView
android:id="#+id/txtForgotPwd"
android:textColor="#android:color/white"
android:text="#string/forgot_pwd"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
<info.hoang8f.widget.FButton
android:id="#+id/btnSignIn1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
android:text="#string/Button2"
android:textColor="#android:color/white"
app:cornerRadius="4dp"
app:fButtonColor="#00A9D440"
app:shadowColor="#00000000"
app:shadowEnabled="true"
app:shadowHeight="5dp" />
</RelativeLayout>
SignIn.java
public class SignIn extends AppCompatActivity {
EditText editPhone,editPassword;
Button btnSignIn;
CheckBox ckbRemember;
TextView txtForgotPwd;
FirebaseDatabase database;
DatabaseReference table_user;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sign_in);
editPassword = (MaterialEditText)findViewById(R.id.editPassword);
editPhone = (MaterialEditText)findViewById(R.id.editPhone);
btnSignIn = (Button)findViewById(R.id.btnSignIn1);
ckbRemember = (CheckBox)findViewById(R.id.ckbRemember);
txtForgotPwd = (TextView) findViewById(R.id.txtForgotPwd);
"Caused by: java.lang.ClassCastException: android.support.v7.widget.AppCompatTextView cannot be cast to com.rey.material.widget.TextView"

Check your imports in SignIn.java. You are probably importing com.rey.material.widget.TextView instead of android.widget.TextView.
If you want to use the com.rey TextView instead of the normal one you have to write
<com.rey.material.widget.TextView
android:id="#+id/txtForgotPwd"
android:textColor="#android:color/white"
...
in your xml.

Related

Button setonclick listener is not working correctly

when I press the save button does not work after pressing it several time button is working sometimes first-time press is working sometimes after pressing moreover 10 times button is not working.Also i have toast messege to determine it is working or not the toast messege appear after pressing several time to the button.
binding.savebtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(Settringsactivity.this,"ok",Toast.LENGTH_LONG).show();
String status=binding.etStatus.getText().toString();
String username=binding.etUsername.getText().toString();
HashMap<String, Object> obj=new HashMap<>();
Toast.makeText(Settringsactivity.this,username,Toast.LENGTH_LONG).show();
obj.put("username",username);
obj.put("about",status);
if(name!=null) {
Toast.makeText(Settringsactivity.this,"Updated",Toast.LENGTH_LONG).show();
database.getReference().child("Users").child(name).updateChildren(obj);
}
}
});
Here is the xml code
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/savebtn"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:background="#color/white"
android:foregroundTint="#B11B1B"
tools:context=".Settringsactivity">
<ImageView
android:id="#+id/settingsbackarraow"
android:layout_width="30dp"
android:layout_height="30dp"
android:backgroundTint="#FFFFFF"
app:srcCompat="#android:drawable/checkbox_on_background" />
<LinearLayout
android:id="#+id/flinear"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/settingsbackarraow"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:gravity="center"
android:orientation="vertical">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/profileimage"
android:layout_width="120dp"
android:layout_height="120dp"
android:backgroundTint="#FFFFFF"
app:civ_border_color="#FF000000"
app:civ_border_width="2dp"
android:src="#drawable/img" />
<ImageView
android:id="#+id/plus"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:srcCompat="#android:drawable/btn_plus" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Username"
android:textColor="#100606" />
<EditText
android:id="#+id/etUsername"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:textColor="#color/black"
android:hint="Enter your name"
android:inputType="textPersonName" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Username"
android:textColor="#100606" />
<EditText
android:id="#+id/etStatus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:hint="About"
android:textColor="#color/black"
android:inputType="textPersonName" />
</LinearLayout>
<Button
android:layout_width="100dp"
android:layout_height="50dp"
android:elevation="15sp"
android:background="#1966FB"
android:layout_gravity="right"
android:text="Save" />
</LinearLayout>
</RelativeLayout>

How to access an item inside layout dialog?

Dialog was designed by the XML layer and named layout inside it contains a collection of spinner and TextView and some buttons are called from main activity class now I want to know which one of the spinner inside the
D1 () function
I want to define the elements within the layer layout , How do I do that?
//layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"
android:layout_width="260dp"
android:layout_height="200dp"
android:orientation="vertical"
android:background="#f71717">
<LinearLayout
android:id="#+id/l_layout"
android:paddingTop="10dp"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
tools:ignore="ObsoleteLayoutParam">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textColor="#ffffff"
android:text="وقت التسليم"
android:textSize="20dp"
tools:ignore="HardcodedText,SpUsage" />
<Spinner
android:id="#+id/tex"
android:layout_width="172dp"
android:paddingRight="40dp"
android:layout_height="wrap_content"
android:layout_below="#+id/textView"
android:drawSelectorOnTop="true"
android:popupBackground="#c853d7"
style="#style/spinner_style"
tools:ignore="HardcodedText,RtlHardcoded,RtlSymmetry,SpUsage"
android:entries="#array/day_"/>
</LinearLayout>
<RelativeLayout
android:id="#+id/rl"
android:layout_width="250dp"
android:layout_height="129dp"
android:layout_below="#+id/l_layout"
android:background="#f71717"
android:layout_marginTop="0dp"
tools:ignore="ObsoleteLayoutParam">
<TextView
android:id="#+id/text_h"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toStartOf="#+id/spinner_minutes2"
android:paddingLeft="10dp"
android:text="ساعة"
tools:ignore="HardcodedText,RtlHardcoded,RtlSymmetry" />
<TextView
android:id="#+id/text_m"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/spinner_minutes2"
android:layout_alignBottom="#+id/spinner_minutes2"
android:layout_alignStart="#+id/button_holder"
android:paddingLeft="10dp"
android:text="دق"
tools:ignore="HardcodedText,RtlHardcoded,RtlSymmetry" />
<TextView
android:id="#+id/text_pam"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="30dp"
android:text="ص/م"
tools:ignore="HardcodedText,RtlHardcoded,RtlSymmetry"
android:layout_marginEnd="12dp"
android:layout_alignBaseline="#+id/spinner_minutes"
android:layout_alignBottom="#+id/spinner_minutes"
android:layout_alignEnd="#+id/spinner_minutes3" />
<Spinner
android:id="#+id/spinner_minutes"
android:layout_width="85dip"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
style="#style/spinner_style"
android:layout_alignStart="#+id/spinner_minutes2"
android:entries="#array/fruits" />
<Spinner
android:id="#+id/spinner_minutes2"
android:layout_width="85dip"
android:layout_height="wrap_content"
android:layout_below="#+id/spinner_minutes"
android:layout_marginStart="16dp"
style="#style/spinner_style"
android:layout_toEndOf="#+id/text_m"
android:entries="#array/fruits" />
<Spinner
android:id="#+id/spinner_minutes3"
android:layout_width="85dip"
android:layout_height="wrap_content"
style="#style/spinner_style"
android:paddingRight="20dp"
android:entries="#array/apm"
tools:ignore="RtlHardcoded,RtlSymmetry"
android:layout_alignBaseline="#+id/spinner_minutes2"
android:layout_alignBottom="#+id/spinner_minutes2"
android:layout_toEndOf="#+id/spinner_minutes" />
<TextView
android:id="#+id/text_timer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textAppearance="?android:attr/textAppearanceMedium"
android:visibility="gone" />
<LinearLayout
android:id="#+id/button_holder"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/spinner_minutes"
android:layout_centerHorizontal="true"
android:paddingTop="10dp"
android:layout_marginTop="20dip">
<Button
android:id="#+id/button_set"
android:layout_width="100dip"
android:layout_height="wrap_content"
android:layout_marginBottom="5dip"
android:layout_marginLeft="10dip"
android:text="Set"
tools:ignore="ButtonStyle,HardcodedText,RtlHardcoded" />
<Button
android:id="#+id/button_cancel"
android:layout_width="100dip"
android:layout_height="wrap_content"
android:layout_marginBottom="5dip"
android:layout_marginRight="10dip"
android:text="Cancel"
tools:ignore="ButtonOrder,ButtonStyle,HardcodedText,RtlHardcoded" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
// class: mainactivity
public class MainActivity extends AppCompatActivity {
Button buttonstartSetDialog;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
buttonstartSetDialog = (Button)findViewById(R.id.startSetDialog);
buttonstartSetDialog.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
d1();
}});
}
public void d1(){
Dialog about_dlg = new Dialog(MainActivity.this);
about_dlg.requestWindowFeature(Window.FEATURE_NO_TITLE);
about_dlg.setContentView(R.layout.layout);
about_dlg.show();
//Spinner spinner = (Spinner) findViewById(R.id.spinner);
}
}

to access to Spinner in your layout :
public void d1(){
Dialog about_dlg = new Dialog(MainActivity.this);
about_dlg.requestWindowFeature(Window.FEATURE_NO_TITLE);
about_dlg.setContentView(R.layout.layout);
Spinner sp1 = about_dlg.findViewById(R.id.spinner_minutes);
Spinner sp1 = about_dlg.findViewById(R.id.spinner_minutes);
Spinner sp1 = about_dlg.findViewById(R.id.spinner_minutes);
about_dlg.show();
}

Showing null pointer exception even though no error is showing up [duplicate]

This question already has answers here:
What is a stack trace, and how can I use it to debug my application errors?
(7 answers)
Closed 4 years ago.
This is the code MainActivity.java file. I think there should be no mistake in this code. But it shows the message
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference.
I don't know why it is showing up there? Please help me to figure out.
package com.example.android.practiceset2;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.*;
import android.view.*;`
public class MainActivity extends AppCompatActivity {
int score=0,wickets=0;
String value=null,number=null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
Button b1=(Button)findViewById(R.id.b_i1);//b_i1 stands for increase in 1 run taken by team B and similarly other names are to the ids of different button.
Button b2=(Button)findViewById(R.id.b_i2);
Button b3=(Button)findViewById(R.id.b_i3);
Button b4=(Button)findViewById(R.id.b_i4);
Button b6=(Button)findViewById(R.id.b_i6);
Button bw=(Button)findViewById(R.id.b_w);
Button bwide=(Button)findViewById(R.id.b_wide);
Button a1=(Button)findViewById(R.id.a_i1);
Button a2=(Button)findViewById(R.id.a_i2);
Button a3=(Button)findViewById(R.id.a_i3);
Button a4=(Button)findViewById(R.id.a_i4);
Button a6=(Button)findViewById(R.id.a_i6);
Button aw=(Button)findViewById(R.id.a_w);
Button awide=(Button)findViewById(R.id.a_wide);
TextView ta= (TextView)findViewById(R.id.a);
TextView tb= (TextView)findViewById(R.id.b);
public void aorb(View view{
if(getResources().getResourceEntryName((view.getId())).startsWith("a"))
{ value="a";}
else{value="b";}
number=getResources().getResourceEntryName((view.getId())).substring(2);
score();}
public void a_enabled(Boolean b)
{
a1.setEnabled(b);
a2.setEnabled(b);
a3.setEnabled(b);
a4.setEnabled(b);
a6.setEnabled(b);
aw.setEnabled(b);
awide.setEnabled(b);
}
public void b_enabled(Boolean b)
{
b1.setEnabled(b);
b2.setEnabled(b);
b3.setEnabled(b);
b4.setEnabled(b);
b6.setEnabled(b);
bw.setEnabled(b);
bwide.setEnabled(b);
}
public void display(String s){
if(value.equals("a"))
{
ta.setText(s);
b_enabled(false);
a_enabled(true);
}
else {
tb.setText(s);
a_enabled(false);
b_enabled(true);
}
}
public void score(){
int i=0;
if(number.equals("i1"))
i=1;
if(number.equals("i2"))
i=2;
if(number.equals("i3"))
i=3;
if(number.equals("i4"))
i=4;
if(number.equals("i6"))
i=6;
if(number.equals("wide"))
i=1;
score+=i;
if(number.equals("w"))
wickets+=1;
if(wickets==10)//if a team loses all its 10 wickets , the score is finalised and next team is invited for play
{
display(score+"/"+wickets);
if(value.equals("a"))
{
value="b";
}
else{value="a";}
score=0;
wickets=0;
display(score+"/"+wickets);
}
display(score+"/"+wickets);
}
public void reset(View view){
ta.setText("0/0");
tb.setText("0/0");
a_enabled(true);
b_enabled(true);
}}
This is the code for my content_main.xml file.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:background="#FFFFFF">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Team A"
android:textAlignment="center"
android:fontFamily="sans-serif-medium"
android:textSize="20sp"
android:textColor="#616161"
android:layout_margin="16dp"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="24dp"
android:text="0/0"
android:textAlignment="center"
android:fontFamily="sans-serif-light"
android:textSize="56dp"
android:textColor="#000000"
android:id="#+id/a"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1"
android:onClick="aorb"
android:id="#+id/a_i1"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="3"
android:onClick="aorb"
android:id="#+id/a_i3"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="6"
android:onClick="aorb"
android:id="#+id/a_i6"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2"
android:onClick="aorb"
android:id="#+id/a_i2"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="4"
android:onClick="aorb"
android:id="#+id/a_i4"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Out"
android:onClick="aorb"
android:id="#+id/a_w"
/>
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAlignment="center"
android:layout_centerHorizontal="true"
android:text="Wide"
android:onClick="aorb"
android:id="#+id/a_wide"/>
</RelativeLayout>
</LinearLayout>
<View
android:layout_width="2dp"
android:layout_height="match_parent"
android:background="#android:color/darker_gray"></View>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Team B"
android:textAlignment="center"
android:fontFamily="sans-serif-medium"
android:textSize="20sp"
android:textColor="#616161"
android:layout_margin="16dp"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="24dp"
android:text="0/0"
android:textAlignment="center"
android:fontFamily="sans-serif-light"
android:textSize="56dp"
android:textColor="#000000"
android:id="#+id/b"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1"
android:onClick="aorb"
android:id="#+id/b_i1"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="3"
android:onClick="aorb"
android:id="#+id/b_i3"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="6"
android:onClick="aorb"
android:id="#+id/b_i6"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2"
android:onClick="aorb"
android:id="#+id/b_i2"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="4"
android:onClick="aorb"
android:id="#+id/b_i4"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Out"
android:onClick="aorb"
android:id="#+id/b_w"
/>
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAlignment="center"
android:layout_centerHorizontal="true"
android:text="Wide"
android:onClick="aorb"
android:id="#+id/b_wide"
/>
</RelativeLayout>
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Reset"
android:textAlignment="center"
android:layout_centerHorizontal="true"
android:onClick="reset"
android:layout_marginBottom="32dp"
/>
</RelativeLayout>
Here is the image of it should look like it is the screenshot the preview

All these findViewById must be included in your onCreate() method. You can keep the declarations out of onCreate(). Your views do not exist before setContentView(R.layout.activity_main);
I mean before onCreate() you can have Button b1;
and after setContentView(R.layout.activity_main); in onCreate() you must have b1=(Button)findViewById(R.id.b_i1);
for every view.

I have made the corrections in your and now the app is not crashing. Try using the below code snippet
MainActivity
public class MainActivity extends AppCompatActivity {
int score = 0, wickets = 0;
String value = null, number = null;
Button b1;
Button b2;
Button b3;
Button b4;
Button b6;
Button bw;
Button bwide;
Button a1;
Button a2;
Button a3;
Button a4;
Button a6;
Button aw;
Button awide;
TextView ta;
TextView tb;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.content_main);
b1 = (Button) findViewById(R.id.b_i1);//b_i1 stands for increase in 1 run taken by team B and similarly other names are to the ids of different button.
b2 = (Button) findViewById(R.id.b_i2);
b3 = (Button) findViewById(R.id.b_i3);
b4 = (Button) findViewById(R.id.b_i4);
b6 = (Button) findViewById(R.id.b_i6);
bw = (Button) findViewById(R.id.b_w);
bwide = (Button) findViewById(R.id.b_wide);
a1 = (Button) findViewById(R.id.a_i1);
a2 = (Button) findViewById(R.id.a_i2);
a3 = (Button) findViewById(R.id.a_i3);
a4 = (Button) findViewById(R.id.a_i4);
a6 = (Button) findViewById(R.id.a_i6);
aw = (Button) findViewById(R.id.a_w);
awide = (Button) findViewById(R.id.a_wide);
ta = (TextView) findViewById(R.id.a);
tb = (TextView) findViewById(R.id.b);
}
public void aorb(View view) {
if (getResources().getResourceEntryName((view.getId())).startsWith("a")) {
value = "a";
} else {
value = "b";
}
number = getResources().getResourceEntryName((view.getId())).substring(2);
score();
}
public void a_enabled(Boolean b) {
a1.setEnabled(b);
a2.setEnabled(b);
a3.setEnabled(b);
a4.setEnabled(b);
a6.setEnabled(b);
aw.setEnabled(b);
awide.setEnabled(b);
}
public void b_enabled(Boolean b) {
b1.setEnabled(b);
b2.setEnabled(b);
b3.setEnabled(b);
b4.setEnabled(b);
b6.setEnabled(b);
bw.setEnabled(b);
bwide.setEnabled(b);
}
public void display(String s) {
if (value.equals("a")) {
ta.setText(s);
b_enabled(false);
a_enabled(true);
} else {
tb.setText(s);
a_enabled(false);
b_enabled(true);
}
}
public void score() {
int i = 0;
if (number.equals("i1"))
i = 1;
if (number.equals("i2"))
i = 2;
if (number.equals("i3"))
i = 3;
if (number.equals("i4"))
i = 4;
if (number.equals("i6"))
i = 6;
if (number.equals("wide"))
i = 1;
score += i;
if (number.equals("w"))
wickets += 1;
if (wickets == 10)//if a team loses all its 10 wickets , the score is finalised and next team is invited for play
{
display(score + "/" + wickets);
if (value.equals("a")) {
value = "b";
} else {
value = "a";
}
score = 0;
wickets = 0;
display(score + "/" + wickets);
}
display(score + "/" + wickets);
}
public void reset(View view) {
ta.setText("0/0");
tb.setText("0/0");
a_enabled(true);
b_enabled(true);
}
}
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"
android:orientation="horizontal">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:fontFamily="sans-serif-medium"
android:text="Team A"
android:textAlignment="center"
android:textColor="#616161"
android:textSize="20sp" />
<TextView
android:id="#+id/a"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="24dp"
android:fontFamily="sans-serif-light"
android:text="0/0"
android:textAlignment="center"
android:textColor="#000000"
android:textSize="56dp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="8dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="8dp"
android:layout_weight="1"
android:orientation="vertical">
<Button
android:id="#+id/a_i1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="1" />
<Button
android:id="#+id/a_i3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="3" />
<Button
android:id="#+id/a_i6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="6" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="8dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="8dp"
android:layout_weight="1"
android:orientation="vertical">
<Button
android:id="#+id/a_i2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="2" />
<Button
android:id="#+id/a_i4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="4" />
<Button
android:id="#+id/a_w"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="Out" />
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="#+id/a_wide"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:onClick="aorb"
android:text="Wide"
android:textAlignment="center" />
</RelativeLayout>
</LinearLayout>
<View
android:layout_width="2dp"
android:layout_height="match_parent"
android:background="#android:color/darker_gray"></View>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:fontFamily="sans-serif-medium"
android:text="Team B"
android:textAlignment="center"
android:textColor="#616161"
android:textSize="20sp" />
<TextView
android:id="#+id/b"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="24dp"
android:fontFamily="sans-serif-light"
android:text="0/0"
android:textAlignment="center"
android:textColor="#000000"
android:textSize="56dp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="8dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="8dp"
android:layout_weight="1"
android:orientation="vertical">
<Button
android:id="#+id/b_i1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="1" />
<Button
android:id="#+id/b_i3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="3" />
<Button
android:id="#+id/b_i6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="6" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="8dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="8dp"
android:layout_weight="1"
android:orientation="vertical">
<Button
android:id="#+id/b_i2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="2" />
<Button
android:id="#+id/b_i4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="4" />
<Button
android:id="#+id/b_w"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="aorb"
android:text="Out" />
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="#+id/b_wide"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:onClick="aorb"
android:text="Wide"
android:textAlignment="center" />
</RelativeLayout>
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginBottom="32dp"
android:onClick="reset"
android:text="Reset"
android:textAlignment="center" />
</RelativeLayout>
</RelativeLayout>
Hope this helps.

Nullpointer setadapter in spinner

this is my code where there is an error.
i think that every its ok but i dont know where is the error
this is my code:
public class MainActivity extends Activity implements OnItemSelectedListener{
private EditText promAcum;
private EditText credCur;
private EditText sem;
private EditText num_examenes;
private EditText editText13;
private EditText editText14;
private EditText editText15;
private EditText editText16;
private EditText editText17;
private EditText editText18;
private EditText editText19;
private EditText editText20;
private EditText editText21;
private Spinner spinner1;
public String valorPromAcum;
public String valorCredCur;
public String valorSem;
public String[] numeroExamenes={"3","4","5","6"};
private final static String TAG_FRAGMENT = "TAG_FRAGMENT";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FragmentManager fm = getFragmentManager();
Fragment fragment = fm.findFragmentById(R.id.fragment_content);
if (fragment == null) {
FragmentTransaction ft = fm.beginTransaction();
ft.add(R.id.fragment_content, new MainFragment());
ft.commit();
}
promAcum = (EditText) findViewById(R.id.promAcum);
credCur = (EditText) findViewById(R.id.credCur);
sem = (EditText) findViewById(R.id.sem);
editText13 = (EditText)findViewById(R.id.editText13);
editText14 = (EditText)findViewById(R.id.editText14);
editText15 = (EditText)findViewById(R.id.editText15);
editText16 = (EditText)findViewById(R.id.editText16);
editText17 = (EditText)findViewById(R.id.editText17);
editText18 = (EditText)findViewById(R.id.editText18);
editText19 = (EditText)findViewById(R.id.editText19);
editText20 = (EditText)findViewById(R.id.editText20);
editText21 = (EditText)findViewById(R.id.editText21);
spinner1 = (Spinner) findViewById(R.id.spinner1);
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String> (this,android.R.layout.simple_spinner_item,numeroExamenes);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(dataAdapter);
addListenerOnSpinnerItemSelection();
}
public void addListenerOnSpinnerItemSelection(){
spinner1.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(MainActivity.this,
"On Button Click : " +
"\n" + String.valueOf(spinner1.getSelectedItem()) ,
Toast.LENGTH_LONG).show();
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub
}
});}
this is my xml code
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="3" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="2"
android:text="#string/materias"
android:textSize="20sp" />
<EditText
android:id="#+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="2"
android:ems="10"
android:inputType="text" >
</EditText>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="3" >
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="3" >
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/creditos"
android:textSize="20sp" />
<EditText
android:id="#+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="number" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="3"
android:layout_marginBottom="30sp">
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cantidad de Examenes"
android:textSize="20sp" />
<Spinner
android:id="#+id/spinner1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TableRow
android:id="#+id/tableRow1"
android:layout_width="fill_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:textSize="20sp"
android:text="Examen" />
<TextView
android:id="#+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:textSize="20sp"
android:text="Nota" />
<TextView
android:id="#+id/textView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:gravity="center"
android:layout_weight="2"
android:text="%" />
</TableRow>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TableRow
android:id="#+id/tableRow2"
android:layout_width="fill_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/editText4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="text"/>
<EditText
android:id="#+id/editText5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="numberDecimal"/>
<EditText
android:id="#+id/editText6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="number"/>
</TableRow>
<TableRow
android:id="#+id/tableRow3"
android:layout_width="fill_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/editText7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="text"/>
<EditText
android:id="#+id/editText8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="numberDecimal"/>
<EditText
android:id="#+id/editText9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="number"/>
</TableRow>
<TableRow
android:id="#+id/tableRow4"
android:layout_width="fill_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/editText10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="text"/>
<EditText
android:id="#+id/editText11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="numberDecimal"/>
<EditText
android:id="#+id/editText12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="number"/>
</TableRow>
<TableRow
android:id="#+id/tableRow5"
android:layout_width="fill_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/editText13"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="text"/>
<EditText
android:id="#+id/editText14"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="numberDecimal"/>
<EditText
android:id="#+id/editText15"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="number"/>
</TableRow>
<TableRow
android:id="#+id/tableRow6"
android:layout_width="fill_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/editText16"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="text"/>
<EditText
android:id="#+id/editText17"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="numberDecimal"/>
<EditText
android:id="#+id/editText18"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="number"/>
</TableRow>
<TableRow
android:id="#+id/tableRow7"
android:layout_width="fill_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/editText19"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="text"/>
<EditText
android:id="#+id/editText20"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="numberDecimal"/>
<EditText
android:id="#+id/editText21"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:inputType="number" />
</TableRow>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="3" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/guardar" />
<Button
android:id="#+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="2"
android:onClick="agregarNotas"
android:text="#string/materias" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="3"
android:text="#string/nueva" />
</LinearLayout>
logcat error line 78 : spinner1.setadapter(adapter);
enter code here09-03 11:25:46.344: E/AndroidRuntime(7841): Caused by: java.lang.NullPointerException
09-03 11:25:46.344: E/AndroidRuntime(7841): at com.jonathanar.promapp.MainActivity.onCreate(MainActivity.java:78)
any suggestions are appreciated

You are trying to retrieve Views from Activity, but they are in Fragment.
getActivity().findViewById(R.id.yourId); is what you should do whenever you are using findViewById() method.

The NullPointerException is not a problem with instantiating your adapter, but rather with the way you are getting the Spinner.
If the spinner exists in the fragment you need to specify its context as so.
just putting findViewById() is really this.findViewById(), where this is your activity. In other words your telling the method to find views in the content view of the activity.
If the spinner is in the content view of the fragment, you need to instead use
fragment.getActivity().findViewById(R.id.???);
this way findViewById() knows to find your spinner in the context of the fragment.
Hope this helps!

Android Layout - Adding Dynamic Textview and EditText

In one of my project I want to create a layout like given Image
In image assume that Red boxes are Textviews and Blue boxes are EditText
The number of rows is not known. It depends on web service Response. How can I achieve this.

You can try like this codes. Such as
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="3" >
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="First Row" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="2"
android:orientation="horizontal" >
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="2"
android:orientation="horizontal" >
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="2"
android:orientation="horizontal" >
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="2"
android:orientation="horizontal" >
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="First Row" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="3"
android:orientation="horizontal" >
<Button
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="Ok" />
<Button
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="Cancel" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
I expect it will be helpful for you. Best of luck!

Try adding views dynamically in linear layout which is inside scroll view.
Try this code.I know it is not exact solution.But,Hope it gives you some idea.
public class MainActivity extends Activity {
ScrollView scrollview;
LinearLayout linearLayout;
LinearLayout.LayoutParams layoutParams;
static int i;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
scrollview = (ScrollView)findViewById(R.id.scrollview);
linearLayout = (LinearLayout)findViewById(R.id.linearlayout);
Button button = (Button)findViewById(R.id.button);
layoutParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
button.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
TextView view = new TextView(MainActivity.this);
view.setText(++i+" view");
linearLayout.addView(view, layoutParams);
}
});
}}

first inf_child.xml layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:id="#+id/inf_dynamicLl"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
</LinearLayout>
<LinearLayout
android:id="#+id/btnContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:layout_height="wrap_content"
android:layout_width="0dp"
android:layout_weight="0.25"
android:text="OK"/>
<Button
android:layout_height="wrap_content"
android:layout_width="0dp"
android:layout_weight="0.25"
android:text="Cancel"/>
</LinearLayout>
</LinearLayout>
second inf_dynamic_view.xml layout which will generate row dynamically:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/inner_linear_layout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<TextView
android:id="#+id/firstText"
android:layout_width="0dp"
android:layout_weight="0.25"
android:layout_height="wrap_content"
/>
<TextView
android:id="#+id/secontText"
android:layout_width="0dp"
android:layout_weight="0.25"
android:layout_height="wrap_content"
/>
<TextView
android:id="#+id/ThirdText"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.25" />
<EditText
android:id="#+id/editText"
android:layout_height="wrap_content"
android:layout_width="0dp"
android:layout_weight="0.25"
/>
</LinearLayout>
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) mContext.getSystemService(mContext.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.inf_child, null);
}
LinearLayout dynamicLl = (LinearLayout) convertView.findViewById(R.id.inf_dynamicLl);
for (int rowCounter = 0; rowCounter < parentData.get(groupPosition).childData.get(childPosition).price.size(); rowCounter++)
createRow(dynamicLl, parentData.get(groupPosition).childData.get(childPosition).price.get(rowCounter), groupPosition);
=> create row dynamically
private void createRow(LinearLayout lView, String price, int childPosition) {
LayoutInflater vi = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View l = vi.inflate(R.layout.inf_dynamic_view, null);
final TextView tvFirst, tvSecond,tvThird;
final EditText edt1;
lView.addView(l);
lView.refreshDrawableState();
}

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