I just signed up in order to ask for help.
I'm doing an application which displays an image gallery. When you click any of the images, it must open the image and show it.
There are two activities: 'Galeria' and 'Imagen'. 'Galeria' displays the image gallery and 'Imagen' displays the image clicked.
When an image is clicked, I create the second activity using an Intent as seen in the code below.
Galeria.java code:
package com.ejemplo.galeria;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.View;
public class Galeria extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
//Called when an image is clicked (I use ImageButtons)
public void openImage(View view){
Intent i = new Intent(this,Imagen.class);
i.putExtra("IMAGEN", view.getId());
startActivity(i);
}
}
The method 'openImage()' is called when any of the ImageButton is pushed (Whatever button you press, the same method is called). Here is the 'main.xml' code:
<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:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".Galeria" >
<HorizontalScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id = "#+id/scrollview">
<LinearLayout
android:id="#+id/layout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageButton
android:id="#+id/imagen1"
android:layout_width="100dp"
android:layout_height="100dp"
android:scaleType="fitXY"
android:onClick="openImage"
android:src="#drawable/imagen1"></ImageButton>
<ImageButton
android:id="#+id/imagen2"
android:layout_width="100dp"
android:layout_height="100dp"
android:scaleType="fitXY"
android:onClick="openImage"
android:src="#drawable/imagen2"></ImageButton>
<ImageButton
android:id="#+id/imagen3"
android:layout_width="100dp"
android:layout_height="100dp"
android:scaleType="fitXY"
android:onClick="openImage"
android:src="#drawable/imagen3"></ImageButton>
<ImageButton
android:id="#+id/imagen4"
android:layout_width="100dp"
android:layout_height="100dp"
android:scaleType="fitXY"
android:onClick="openImage"
android:src="#drawable/imagen4"></ImageButton>
<ImageButton
android:id="#+id/imagen5"
android:layout_width="100dp"
android:layout_height="100dp"
android:scaleType="fitXY"
android:onClick="openImage"
android:src="#drawable/imagen5"></ImageButton>
<ImageButton
android:id="#+id/imagen6"
android:layout_width="100dp"
android:layout_height="100dp"
android:scaleType="fitXY"
android:onClick="openImage"
android:src="#drawable/petergriffin"></ImageButton>
<ImageButton
android:id="#+id/imagen7"
android:layout_width="100dp"
android:layout_height="100dp"
android:scaleType="fitXY"
android:onClick="openImage"
android:src="#drawable/gato"></ImageButton>
</LinearLayout>
</HorizontalScrollView>
</RelativeLayout>
So, this is the code of the 'Image' class:
package com.ejemplo.galeria;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.ImageView;
public class Imagen extends Activity{
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
Intent i = getIntent();
int id = i.getIntExtra("IMAGEN", -1);
if(id != -1){
ImageView iv = (ImageView) findViewById(R.id.imageV1);
iv.setImageResource(id); //Error
setContentView(R.layout.imagen);
}
}
}
And this is the XML code of 'imagen.xml' file:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageV1"
android:layout_height="wrap_content"
android:layout_width="wrap_content" ></ImageView>
</LinearLayout>
So, when I modify the source of the ImageView, my applications closes unexpectedly, and I have no idea why. I've been looking for help but I found nothing, so I wish anyone can help me, I'm getting mad.
Thank you!
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OK I FOUND THE ISSUE
I changed the parameter in the method 'setImageResource(id)' for R.drawable.imagen1 and constructed the switch case statement.
But it kept closing unexpectedly!!!
So, in the method 'onCreate()' of 'Imagen' class, I just moved the line 'setContentView(R.layout.imagen)' from the end of the method to the beginning.
PROBLEM SOLVED :)
So here:
Intent i = new Intent(this,Imagen.class);
i.putExtra("IMAGEN", view.getId());
startActivity(i);
you just put view id in intent, but after:
int id = i.getIntExtra("IMAGEN", -1);
if(id != -1){
ImageView iv = (ImageView) findViewById(R.id.imageV1);
iv.setImageResource(id); //Error
setContentView(R.layout.imagen);
}
you try assign this R.id to image resource, this is wrong, because setImageResource expecting something like R.drawable.my_image. Please follow javadoc.
public void openImage(View view){
Intent i = new Intent(this,Imagen.class);
i.putExtra("IMAGEN", view.getId());
startActivity(i);
}
The above view.getId() will return the id of the particular imagebutton. This is no way related to the drawable resource. So when you setImage() in the other activity it will indeed through a error as you are trying to set a button to a image view.
Instead you can construct a switch case statement to send the corresponding drawable id to the other activity.
As others said - you are trying to set View id as ImageResource - those are different two things; so to fix your problem I would suggest something like this
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.imagen); // before findViewById
Intent i = getIntent();
int id = i.getIntExtra("IMAGEN", -1);
if(id != -1){
ImageView iv = (ImageView) findViewById(R.id.imageV1);
switch (id) {
case R.id.imagen1: // first one
iv.setImageResource(R.drawable.imagen1);
break;
// repeat for others
} // switch close
} // if
} // onCreate
anyway it seems to me like you would benefit from using ListView / GridView together w/ some ArrayAdapter
Related
I'm currently following the Android Studio "Build Your First App" tutorial (https://developer.android.com/training/basics/firstapp/starting-activity) and I can't seem to get the DisplayMessageActivity working. The variable "R.id.textView" doesn't seem to exist and I can't see any differences between the tutorial and my own code. I know this is just me being stupid somewhere but I can't pinpoint it.
Here's my code for DisplayMessageActivity.java:
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
public class DisplayMessageActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display_message);
// Get the Intent that started this activity and extract the string
Intent intent = getIntent();
String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);
// Capture the layout's TextView and set the string as its text
TextView textView = findViewById(R.id.textView); <-- Cannot resolve symbol 'textView'
textView.setText(message);
}
}
And MainActivity.java, which is trying to run it:
package com.example.myapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
public class MainActivity extends AppCompatActivity {
public static final String EXTRA_MESSAGE = "com.example.myfirstapp.MESSAGE";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
/** Called when the user taps the Send button */
public void sendMessage(View view) {
Intent intent = new Intent(this, DisplayMessageActivity.class);
EditText editText = (EditText) findViewById(R.id.editTextTextPersonName);
String message = editText.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
}
}
When I try to run the app on the virtual device it doesn't crash, but the button which calls the DisplayMessage activity does nothing.
EDIT: As requested, the xml code for both activities:
activity_display_message.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
tools:context=".DisplayMessageActivity">
</androidx.constraintlayout.widget.ConstraintLayout>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
tools:context=".MainActivity">
<EditText
android:id="#+id/editTextTextPersonName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:ems="10"
android:hint="#string/edit_message"
android:inputType="textPersonName"
app:layout_constraintEnd_toStartOf="#+id/button2"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:onClick="sendMessage"
android:text="#string/button_send"
app:layout_constraintBaseline_toBaselineOf="#+id/editTextTextPersonName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="#+id/editTextTextPersonName" />
</androidx.constraintlayout.widget.ConstraintLayout>
I read the tutorial and I think they missed this part of code:
android:onClick="sendMessage"
so, the code should be like this:
<Button
android:id="#+id/button"
android:onClick="sendMessage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginStart="16dp"
android:text="#string/button_send"
app:layout_constraintBaseline_toBaselineOf="#+id/editText"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="#+id/editText" />
and I think that's it, let me know if it helps
After looking more closely at #Vishal Naikawadi's comment, I realised what the problem was. R.id.textView is not some sort of variable, placeholder, or constant as I had assumed, it is literally getting the object with id "textView" (or so I think). I had accidentally changed the id of the object I was trying to reference in the visual editor, so there was no object with that id. I changed the id of the object back to the same as is referenced in the code and everything seems to be fine now.
Apologies to anyone whose time I've wasted with this, I'm really new to this concept in Java.
I have a simple app that has a Button and a TextView, when I try screen rotation, the TextView stays same while the Button disappears as below.
The Button comes back when I rotate the screen again.
I couldn't find a solution, is this a possible bug?
1- Why does this happening, I guess it's about onCreate() state, but why does TextView stays while the Button disappears?
2- How to solve this issue
3- I'm using Bundle to save the number, is it related to this problem?
I'm using the latest version of Android Studio. Here is my code
MainActivity.java
package com.example.kalicidegiskenler;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
TextView t1;
Button b1;
int say;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
t1 = (TextView) findViewById(R.id.text1);
b1 = (Button) findViewById(R.id.button);
if (savedInstanceState != null){
say = savedInstanceState.getInt("sayac");
t1.setText(String.valueOf(say));
}
else {
say = 0;
}
b1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
say ++;
t1.setText(String.valueOf(say));
}
});
}
#Override
protected void onSaveInstanceState(#NonNull Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("sayac", say);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
tools:context=".MainActivity">
<TextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.12" />
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="159dp"
android:layout_marginLeft="159dp"
android:layout_marginBottom="513dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
It is because the button is drawn out of screen; somewhere above the toolbar.
With app:layout_constraintBottom_toBottomOf used in combination with a padding of 513dp, the button falls out of the screen width (or landscape height) of 320 dp.
If you align it directly under the text, it will be always visible:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
tools:context=".MainActivity">
<TextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintVertical_bias="0.12" />
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#+id/text1"
android:layout_marginTop="16dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:text="Button" />
</androidx.constraintlayout.widget.ConstraintLayout>
Pro-tip: Google advises to use multiples of 8dp for paddings, margins and sizes. This scales well on different screen sizes and it is aesthetically pleasing if views fall in a grid.
I have 3 Fragments inside my MainActivity and in one of my Fragments I have 3 ImageView and each of image view performs same action based on which ImageView was selected, now What I want to achieve is that instead of using OnClickListener for each of Views separately, call same method with switch-case or if-else inside. But the problem is those ImageViews inside fragment cannot call Functions implemented inside MainActivity. for instance. here's the code to understand what I want to say:
MAIN ACTIVITY
public void imageClicked(View v){
if(v.getID() == findViewById(R.id.id_of_imageView_1).getID()){
myTextView.setText("ImageView 1 is Clicked")
}
else if(v.getID() == findViewById(R.id.id_of_imageView_2).getID()){
myTextView.setText("ImageView 2 is Clicked")
}
else if(v.getID() == findViewById(R.id.id_of_imageView_3).getID()){
myTextView.setText("ImageView 3 is Clicked")
}
}
XML (fragment_images.xml) WHERE IMAGES EXIST
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="#+id/id_of_imageView_1"
android:layout_width="0dp"
android:layout_height="100dp"
android:layout_weight="1"
android:src="#drawable/laptop" />
<ImageView
android:id="#+id/id_of_imageView_2"
android:layout_width="0dp"
android:layout_height="100dp"
android:layout_weight="1"
android:src="#drawable/memory" />
<ImageView
android:id="#+id/id_of_imageView_3"
android:layout_width="0dp"
android:layout_height="100dp"
android:layout_weight="1"
android:src="#drawable/screen" />
</LinearLayout>
</ScrollView>
XML (activity_main.xml) HERE I Link my Fragment and TextView
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
//CHANGE THIS TEXT VIEW WHEN IMAGE IS CLICKED
<TextView
android:id="#+id/myTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:gravity="center_horizontal"
android:text="Select Product"
android:textSize="20sp"
android:textStyle="bold" />
<fragment
android:id="#+id/fragment_1"
android:name="com.salmanibrahim.calssifiedelectronics.ListFrag"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
tools:layout="#layout/fragment_list" />
<fragment
android:id="#+id/fragment_2"
android:name="com.salmanibrahim.calssifiedelectronics.DetailFrag"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
tools:layout="#layout/fragment_detail" />
//THIS IS THE FRAGMENT
<fragment
android:id="#+id/fragment_images"
android:name="com.salmanibrahim.calssifiedelectronics.AddProduct"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
tools:layout="#layout/fragment_images" />
</LinearLayout>
How do I call imageClicked() defined inside MainActivity using onClick on ImageView
In your fragment you can call imageClicked() in the MainActivity by using requireActivity() or getActivity() and do the necessary cast
In fragment:
public View onCreateView(...) {
View view = inflater.inflate(R.layout.my_fragment_layout, container, false);
MainActivity mActivity = (MainActivity) requireActivity();
imageView1 = view.findViewById(...);
imageView1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mActivity.imageClicked(imageView1);
}
});
...}
repeat the same for imageView2, 3
Also the condition in imageClicked() seems not right as you findViewById which will point to your MainActivity layout, not the fragment.
So you need to change this
if (v.getID() == findViewById(R.id.id_of_imageView_1).getID())
To
if (v.getID() == R.id.id_of_imageView_1)
And do the same for other images.
I understand what you trying to do but android:onClick parameter only links for the context declared in tools:context field on the parent tag of your layout file.
So it is not possible to reference your imageClicked() function found in your MainActivity from your fragment's ImageView because they are in different context. Check this for more info.
You are doing it in wrong way.
You can do this instead.
imageView_1.setOnClickListener(this);
then implement activity from View.onClickListener
then get view by id on the method that's been implemented.
#Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.id_of_imageView_1:
// do your things here
break;
}
}
The basic view hierarchy is this:
secondActivity
linearLayout(LinearLayout)
constLayout(ConstraintLayout)
textbox(TextView)
image(ImageView)
image2
image3
...
The textbox TextView has visibility GONE, and goal is to make it VISIBLE on clicking other visible siblings, change some colors and text, and when clicked again it must be invisible again and reverse all changes.
Cant understand whatever it is that am missing. I have checked many older projects in which I did the same thing and cant find any visible differences as to why this code is not working now.
secondActivity.java
public class secondActivity extends Activity {
public boolean isTextBoxHidden;
public ConstraintLayout constLayout;
public TextView textbox;
#Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
constLayout = findViewById(R.id.constLayout);
textbox = findViewById(R.id.textbox);
isTextBoxHidden = false;
// SETTING UP LISTENER
View.OnClickListener clickListener = new View.OnClickListener() {
#Override
public void onClick(View v) {
if(!isTextBoxHidden) {
constLayout.setBackgroundColor(Color.BLACK); //setting color on previously
v.setBackgroundColor(Color.BLACK); //setting color on visible view
textbox.setText("whatever");
textbox.setVisibility(View.VISIBLE); //was gone
isTextBoxHidden = true;
}
else {
textbox.setVisibility(View.GONE); //hide again
constLayout.setBackgroundColor(Color.WHITE);
v.setBackgroundColor(Color.WHITE);
isTextBoxHidden = false;
}
}
};
// INSERTING LISTENERS into all children
for(int i=0; i<constLayout.getChildCount(); i++) {
constLayout.getChildAt(i).setOnClickListener(clickListener);
}
}
}
activity_second.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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/linearLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".secondActivity">
<android.support.constraint.ConstraintLayout
android:id="#+id/constLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white">
<TextView
android:id="#+id/textbox"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="example"
android:visibility="gone"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<ImageButton
android:id="#+id/image"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:scaleType="fitXY"
android:src="#drawable/example"
android:clickable="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintLeft_toLeftOf="parent"/>
<!--few more clones of the first imageButton-->
</android.support.constraint.ConstraintLayout>
</LinearLayout>
I can't see where you're setting textbox reference, so maybe that's a clue.
Edit:
Did compiled that example you have provided and everything works correctly, but i assume that [...] gone again for good meant you probably want this to be one shot action so instead of boolean just use Boolean and compare it to null.
Edit:
On the second thought you can just remove isTextBoxHidden = false; in else branch
I'm making an app that needs to be easily read in the dark. By default, the screen is white, and this can be tough on the eyes of the user. The main activity that the user sees to start off with is called Menu, and I would like this to have a black background all over, with white text. I have everything how I want colour-wise, except for my ListView, where it looks black, but I cannot see the text because the background is black as well.
menu.xml:
<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:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:background="#000000"
tools:context=".MainActivity" xmlns:app="http://schemas.android.com/apk/lib/com.google.ads">
<TextView
android:id="#+id/SelectSong"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#android:id/list"
android:layout_alignTop="#+id/ic_launcher"
android:text="#string/SelectSong"
android:textSize="20sp"
android:textColor="#FFFFFF" />
<ListView
android:id="#android:id/list"
android:layout_width="wrap_content"
android:layout_height="320dp"
android:layout_above="#+id/settings_button"
android:layout_below="#+id/ic_launcher"
android:textColor="#FFFFFF"
tools:listitem="#android:layout/simple_list_item_1" >
</ListView>
<ImageView
android:id="#+id/ic_launcher"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:contentDescription="#string/ic_launcher"
android:src="#drawable/ic_launcher" />
<ImageButton
android:id="#+id/settings_button"
android:src="#drawable/settings_button_selected"
android:contentDescription="#string/action_settings"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true" />
<ImageButton
android:id="#+id/exit_button"
android:src="#drawable/exit_button_selected"
android:contentDescription="#string/exit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true" />
</RelativeLayout>
Menu.java:
package com.lmarshall1995.scoutsongs;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.ListView;
public class Menu extends ListActivity{
String classes[] = {"......"};
String items[] = {"......"};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.menu);
final ImageButton settings = (ImageButton) findViewById(R.id.settings_button);
settings.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
......
}
});
final ImageButton back = (ImageButton) findViewById(R.id.exit_button);
back.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
......
}
});
setListAdapter(new ArrayAdapter<String>(Menu.this, android.R.layout.simple_list_item_1, items));
}
#Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
String song_activity = classes[position];
try{
Class<?> ourClass = Class.forName("com.lmarshall1995.scoutsongs." + song_activity);
Intent ourIntent = new Intent(Menu.this, ourClass);
startActivity(ourIntent);
}catch(ClassNotFoundException e){
e.printStackTrace();
}
}
}
Please can someone show me how I need to change my code in order to make this work? - I have removed any code that is unnecessary to share by putting "......".
Thank you,
From
Laurence =]
You can add a dark background to the List view. down load a black png image and place in the drawable folders.Example is show
android:background="#drawable/some_black_image"
<ListView
android:id="#android:id/list"
android:layout_width="wrap_content"
android:layout_height="320dp"
android:layout_above="#+id/settings_button"
android:layout_below="#+id/ic_launcher"
android:textColor="#FFFFFF"
android:background="#drawable/some_black_image"
tools:listitem="#android:layout/simple_list_item_1" >
</ListView>