Motion event error on ImageButton click

Motion event error on ImageButton click - java

public class AddActivity extends Activity implements OnClickListener{
String[] info = new String[11];
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_layout);
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
TextView keyString = (TextView)findViewById(R.id.keyString);
TextView site1 = (TextView)findViewById(R.id.site1);
TextView site2 = (TextView)findViewById(R.id.site2);
TextView site3 = (TextView)findViewById(R.id.site3);
ImageButton submit = (ImageButton)findViewById(R.id.submit);
ImageButton add1 = (ImageButton)findViewById(R.id.add1);
ImageButton add2 = (ImageButton)findViewById(R.id.add2);
ImageButton add3 = (ImageButton)findViewById(R.id.add3);
submit.setOnClickListener((OnClickListener) this);
add1.setOnClickListener((OnClickListener) this);
add2.setOnClickListener((OnClickListener) this);
add3.setOnClickListener((OnClickListener) this);
int id = v.getId();
switch(id){
case R.id.submit:{
submitEntry(info);
break;
}
case R.id.add1:{
add2.setVisibility(View.VISIBLE);
site2.setVisibility(View.VISIBLE);
break;
}
}
}
}
This is the code.
<?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" >
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/key_string"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:visibility="invisible" />
<EditText
android:id="#+id/keyString"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:visibility="invisible" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/site_string"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="#+id/textView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:visibility="invisible" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageButton
android:id="#+id/add1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_action_new" />
<EditText
android:id="#+id/site1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/url_hint"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:visibility="invisible" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageButton
android:id="#+id/add2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_action_new"
android:visibility="invisible" />
<EditText
android:id="#+id/site2"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:text="#string/url_hint"
android:textAppearance="?android:attr/textAppearanceLarge"
android:visibility="invisible" />
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:visibility="invisible" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageButton
android:id="#+id/add3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_action_new"
android:visibility="invisible" />
<EditText
android:id="#+id/site3"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:text="#string/url_hint"
android:visibility="invisible"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:visibility="invisible" />
<Button
android:id="#+id/submit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="#string/submit_buttom" />
</LinearLayout>
</ScrollView>
</LinearLayout>
And this is the XML. The add1, add2, add3 and submit ImageButtons are all in a ScrollView.
When I press the add1 ImageButton, I want the add2 and site2 ImageButtons to become visible but instead, it throws the following error.
Motion event has invalid pointer count 0; value must be between 1 and 16.
What am I doing wrong?
PS: All the findViewById() calls are in the onClick() method because a NullPointerExeption is thrown if I call them in the onCreate().

Those findViewByIdcalls in onClickdon't make sense. Not sure why you are getting a null pointer exception calling them in onCreate.onClick is never called in this instance because nothing in the creation of the Activity is assigning the buttons to look at your onClick method; the buttons will default to having no listener assigned. It also doesn't look like a good idea to use the Activity as the onClickListener as well.
Your code should look something like this:
public class AddActivity extends Activity {
// https://source.android.com/source/code-style.html
// info -> mInfo; non-public, non-static field!
String[] mInfo = new String[11];
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_layout);
TextView keyString = (TextView)findViewById(R.id.keyString);
TextView site1 = (TextView)findViewById(R.id.site1);
TextView site2 = (TextView)findViewById(R.id.site2);
TextView site3 = (TextView)findViewById(R.id.site3);
Button submit = (Button)findViewById(R.id.submit);
ImageButton add1 = (ImageButton)findViewById(R.id.add1);
ImageButton add2 = (ImageButton)findViewById(R.id.add2);
ImageButton add3 = (ImageButton)findViewById(R.id.add3);
add1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
add2.setVisibility(View.VISIBLE);
site2.setVisibility(View.VISIBLE);
}
});
submit.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
submitEntry(mInfo);
}
});
}

The findViewById() calls and especially the setOnClickListener() calls should have been inside the onCreate(). With setOnClickListener() inside the onClick() i doubt the onClick was ever called.
We would need more logs to find the exact issue.

Related

How to pass users EditText input in a Textview in another activity

I have 2 textboxes with a users name and Id number in my main activity.
When clicking the edit button the user is sent to second activity where they can edit their name and Id number.
Then when they click Save, the edited input should override the written text in the two existing textviews in the first activity.
But when I click the Save button, my app crashes...
Furthermore, main activity has also a capture profile pic. feauture, but when in landscape mode, my captured image. disappear.
I'm totally new to Android and this is a school assignment with due on Sunday... Can someone please help me!!
This is my first activity's xml:
<?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: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="com.example.solveigdoan.cameraactivity.SecondActivity2"
android:background="#F0FFFF">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPersonName"
android:ems="8"
android:id="#+id/EditName"
android:layout_marginTop="42dp"
android:hint="Solveig Mortensen"
android:layout_marginLeft="160dp"
android:background="#87CEEB"
android:textSize="20dp"
android:textColor="#000000" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#id/EditName"
android:text="#string/edit_name"
android:textSize="20dp"
android:textColor="#000000"
android:id="#+id/NameLabel" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="number"
android:ems="8"
android:id="#+id/EditID"
android:hint="123456"
android:layout_below="#+id/EditName"
android:layout_alignLeft="#+id/EditName"
android:layout_alignStart="#+id/EditName"
android:layout_marginTop="40dp"
android:background="#87CEEB"
android:textSize="20dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#id/EditID"
android:text="#string/edit_id"
android:textSize="20dp"
android:textColor="#000000"
android:id="#+id/IdLabel" />
<CheckBox
android:id="#+id/Yes"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/Y"
android:onClick="onCheckboxClicked"
android:layout_marginTop="27dp"
android:layout_below="#+id/AndrStatus"
/>
<CheckBox android:id="#+id/NO"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/N"
android:onClick="onCheckboxClicked"
android:layout_marginTop="30dp"
android:layout_below="#+id/Yes"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/cancel"
android:id="#+id/buttonCancel"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:textColor="#000000"
android:background="#87CEEB" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/save_btn"
android:id="#+id/buttonSave"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:textColor="#000000"
android:background="#87CEEB" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/android_developer"
android:id="#+id/AndrStatus"
android:layout_centerVertical="true"
android:layout_alignLeft="#+id/ID"
android:layout_alignStart="#+id/ID"
android:textSize="20dp"
android:textColor="#000000" />
</RelativeLayout>
AND second activity's xml:
<?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: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="com.example.solveigdoan.cameraactivity.CameraActivity">
<FrameLayout
android:id="#+id/camera_preview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#F0FFFF" />
<TextView
android:id="#+id/textview1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/profile_picture"
android:layout_centerHorizontal="true"
android:layout_marginLeft="40dp"
android:textColor="#000000" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="30dp"
android:text="#string/take_photo"
android:layout_below="#+id/textview1"
android:background="#87CEEB"
android:layout_marginBottom="5dp"
android:textColor="#000000" />
<ImageView
android:id="#+id/imageView1"
android:layout_width="match_parent"
android:layout_height="200dp"
android:scaleType="centerCrop"
android:layout_below="#+id/button1"
android:background="#BCC6CC" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:ems="9"
android:id="#+id/Name"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:layout_alignLeft="#+id/ID"
android:layout_alignStart="#+id/ID"
android:layout_below="#+id/imageView1"
android:textSize="20dp"
android:background="#87CEEB"
android:textColor="#000000"
android:hint="Solveig Mortensen" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_alignBaseline="#id/Name"
android:text="#string/name"
android:textSize="20dp"
android:textColor="#000000"
android:id="#+id/NameTitle" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="9"
android:id="#+id/ID"
android:layout_alignTop="#+id/Name"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_marginTop="40dp"
android:textSize="20dp"
android:background="#87CEEB"
android:textColor="#000000"
android:hint="123456" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_alignBaseline="#id/ID"
android:text="#string/id_nr"
android:textSize="20dp"
android:textColor="#000000" />
<Button
android:id ="#+id/push_button"
android:layout_width="50dp"
android:layout_height="50dp"
android:text="#string/edit_btn"
android:background="#drawable/button_bg_round"
android:padding="10dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:textSize="12dp"
android:textColor="#000000" />
<TextView
android:id="#+id/tvView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:layout_below="#+id/ID"
android:layout_marginTop="20dp" />
</RelativeLayout>
My main java (named CameraActivity):
public class CameraActivity extends Activity {
Button BtnTakePhoto;
ImageView imgTakenPhoto;
Button push_button;
TextView Name;
TextView ID;
private static final int CAMERA_REQUEST = 1888;
private static final int EDIT_REQUEST = 1;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera);
push_button = (Button) findViewById(R.id.push_button);
push_button.setOnClickListener(new push_buttonClicker());
imgTakenPhoto = (ImageView) findViewById(R.id.imageView1);
BtnTakePhoto = (Button) findViewById(R.id.button1);
BtnTakePhoto.setOnClickListener(new BtnTakePhotoClicker());
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_REQUEST) {
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
imgTakenPhoto.setImageBitmap(thumbnail);
}
if (requestCode == EDIT_REQUEST) {
Bundle b = getIntent().getExtras();
Name = (TextView) findViewById(R.id.Name);
ID = (TextView) findViewById(R.id.ID);
Name.setText(b.getCharSequence("Name"));
ID.setText(b.getCharSequence("ID nr"));
}
}
class BtnTakePhotoClicker implements Button.OnClickListener
{
#Override
public void onClick(View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
}class push_buttonClicker implements Button.OnClickListener{
public void onClick(View v){
Intent Intent = new Intent(CameraActivity.this, SecondActivity2.class);
CameraActivity.this.startActivityForResult(Intent, EDIT_REQUEST);
}}}
AND my secondActivity.java:
public class SecondActivity2 extends AppCompatActivity {
TextView tvView;
EditText EditName;
EditText EditID;
Button buttonCancel;
Button buttonSave;
CheckBox checkBox;
TextView Name;
TextView ID;
private static final int RESULT_OK = 10;
//private static final int RESULT_CANCELED = 2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second2);
// CheckBox Yes = (CheckBox) findViewById(R.id.Yes);
// CheckBox NO = (CheckBox) findViewById(R.id.NO);
buttonSave = (Button) this.findViewById(R.id.buttonSave);
buttonCancel = (Button) findViewById(R.id.buttonCancel);
EditName = (EditText) findViewById(R.id.EditName);
EditID = (EditText) findViewById(R.id.EditID);
buttonSave.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
Intent data = new Intent();
data.putExtra("name", EditName.getText().toString());
data.putExtra("ID", EditID.getText().toString());
setResult(RESULT_OK, data);
finish();
}
});}}

change your code inside onActivityResult under EDIT_REQUEST condition
String name = data.getStringExtra("name");
String ID = data.getStringExtra("ID");
Name.setText(name);
ID.setText(ID);
no need to create a Bundle there, it will solve your problem.

how to get a layout on click of imageview?

Hello.. I have a layout in which I have ImageView and EditText view. I want to add a different layout on click of ImageView of arrow.
It should look like this after click event of ImageView. How can I get this??
Pleas help...

For perfect answer please add your xml file and java file source code.
Example
MainActivity.java
public class MainActivity extends Activity {
LinearLayout linear1,linear2;
ImageView imgArrow;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
linear1 = (LinearLayout) findViewById(R.id.linear1);
linear2 = (LinearLayout) findViewById(R.id.linear2);
imgArrow = (ImageView) findViewById(R.id.imgArrow);
linear1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(linear2.getVisibility() == View.GONE){
linear2.setVisibility(View.VISIBLE);
imgArrow.setImageResource(R.drawable.up);
}else{
linear2.setVisibility(View.GONE);
imgArrow.setImageResource(R.drawable.down);
}
}
});
}
}
activity_main.xml
<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:id="#+id/linear1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:id="#+id/btnClick"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.3"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/tv1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="0.5"
android:text="Additional Contact" />
<ImageView
android:id="#+id/imgArrow"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_weight="0.2"
android:src="#drawable/down" />
</LinearLayout>
<LinearLayout
android:id="#+id/linear2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:visibility="gone"
android:orientation="vertical" >
<TextView
android:id="#+id/txt1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="User Name here" />
<TextView
android:id="#+id/txt2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="Phone number here" />
<Button
android:id="#+id/btnone"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="Click Here" />
</LinearLayout>
</LinearLayout>
Here down and up is image file for arrow.
so put that both arrow file in drawable folder.

You could just set an OnClickListener to the ImageView, which contains the arrow. Then assign a method, which handles the click and produces your different layout

Unable to click ImageButton

I have a following layout in main_view.xml which contains a ImageButton in it, button when i click/touch the button the ButtonListener function never gets called.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/relativeLayoutFragment"
android:layout_width="match_parent"
android:layout_height="fill_parent" >
<fragment
android:id="#+id/mapArea"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</fragment>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<TextView
android:id="#+id/locate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_gravity="center_horizontal"
android:layout_marginTop="10dp"
android:background="#80000000"
android:gravity="center"
android:padding="10dp"
android:text="#string/findingLocation"
android:textColor="#FFFFFF"
android:textSize="12sp" />
<ImageButton
android:id="#+id/Button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginBottom="#dimen/rightLeftMargin"
android:layout_marginLeft="#dimen/rightLeftMargin"
android:background="#null"
android:clickable="true"
android:contentDescription="#string/button1text"
android:src="#drawable/ic_feed_active" />
<ImageButton
android:id="#+id/Button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="#dimen/rightLeftMargin"
android:background="#null"
android:contentDescription="#string/button2"
android:src="#drawable/ic_button2" />
<ImageButton
android:id="#+id/Button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="#dimen/rightLeftMargin"
android:layout_marginRight="#dimen/rightLeftMargin"
android:background="#null"
android:contentDescription="#string/button3View"
android:src="#drawable/ic_settings_active" />
</RelativeLayout>
And following code in MainActivity.Java
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
User usrObj = new User();
if (usrObj.authenticateUser())
setContentView(R.layout.main_view);
else
setContentView(R.layout.login);
}
public void ButtonListener() {
ImageButton oggleButton = (ImageButton) findViewById(R.id.Button1);
ToggleButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Toast.makeText(MainActivity.this, "ImageButton is clicked!",
Toast.LENGTH_SHORT).show();
}
});
}
}
please help.

you forget to call ButtonListener method when usrObj.authenticateUser() is true. do it as:
if (usrObj.authenticateUser())
{
setContentView(R.layout.main_view);
ButtonListener (); << call here
}
else
setContentView(R.layout.login);
and also attach setOnClickListener to oggleButton instead of ToggleButton

apart from above suggestions from ρяσѕρєя K, here is one more thing you have to take care is.
instead of this below code.
oggleButton.setOnClickListener(new OnClickListener() {
use this one
oggleButton.setOnClickListener(new View.OnClickListener() { // use View.oncli......

how to attach a listener to a radio button

I have an activity that displays various radiobuttons. The radiobuttons are grouped in radiogroups. I want some of the radiobutton to disappear when a certain radiobutton is checked. eg when the incident button is checked the fall, trip and illness radiobutton disappear. how can i achieve this?
I have the foolowing code but need to somehow attach a listener to the incident button.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.reportsomethinglayout);
resolution = (EditText)findViewById(R.id.editTextresolution);
// resolution.setInputType(InputType.TYPE_NULL);
// showSoftKeyboard(resolution);
accident = (RadioButton)findViewById(R.id.radioButtonaccident);
incident = (RadioButton)findViewById(R.id.radioButtonincident);
concern = (RadioButton)findViewById(R.id.radioButtonconcern);
fall = (RadioButton)findViewById(R.id.radioButtonfall);
trip = (RadioButton)findViewById(R.id.radioButtonTrip);
illness = (RadioButton)findViewById(R.id.radioButtonillness);
}
public void onRadioButtonClicked(View view) {
// Is the button now checked?
boolean checked = ((RadioButton) view).isChecked();
// Check which radio button was clicked
switch(view.getId()) {
case R.id.radioButtonaccident:
if (checked)
Log.e(TAG, "accident radiobutton checked");
break;
case R.id.radioButtonincident:
if (checked)
Log.e(TAG, "incident radiobutton checked");
fall.setVisibility(View.GONE);
trip.setVisibility(View.GONE);
illness.setVisibility(View.GONE);
break;
}
}
.
<?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"
android:background="#drawable/carefreebgscaledalphajpg" >
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/linearlayoutasscrollneedsonenamedchild" >
<TextView
android:id="#+id/reportsomethingtitletextview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Carer Reporting"
android:textAppearance="?android:attr/textAppearanceLarge"
android:layout_gravity="center" />
<TextView
android:id="#+id/textViewcategory"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Category" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="#+id/radioButtonaccident"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Accident" />
<RadioButton
android:id="#+id/radioButtonincident"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Incident" />
<RadioButton
android:id="#+id/radioButtonconcern"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Concern" />
</RadioGroup>
</LinearLayout>
<TextView
android:id="#+id/textViewspacer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="" />
<TextView
android:id="#+id/textViewtype"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Type" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="#+id/radioButtonfall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Fall" />
<RadioButton
android:id="#+id/radioButtonTrip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Trip" />
<RadioButton
android:id="#+id/radioButtonillness"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Illness" />
</RadioGroup>
</LinearLayout>
<TextView
android:id="#+id/textViewspacer2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="" />
<TextView
android:id="#+id/textViewaction"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Action" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="#+id/radioButtonCallDoctor"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Call Doctor" />
<RadioButton
android:id="#+id/radioButtoncalledkin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Called next of kin" />
</RadioGroup>
</LinearLayout>
<TextView
android:id="#+id/textViewspacer3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="" />
<TextView
android:id="#+id/textViewresolution"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Resolution" />
<EditText
android:id="#+id/editTextresolution"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="1"
android:lines="8"
android:inputType="textMultiLine"
>
<requestFocus />
</EditText>
<Button
android:id="#+id/buttonsubmit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Submit" />
</LinearLayout>
</ScrollView>
</LinearLayout>

try like this:-
RadioGroup group = (RadioGroup) findViewById(R.id.radioGroup1);
group.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(RadioGroup group, int checkedId)
{
// TODO Auto-generated method stub
if(radiobutton1.isChecked()) {
fall.setVisibility(View.GONE);
trip.setVisibility(View.GONE);
illness.setVisibility(View.GONE);
} else if(radiobutton2.isChecked()) {
}
}
});

You can set a listener on a RadioGroup with setOnCheckedChangeListener. The onCheckedChanged callback receives the ID of the newly checked button in the checkedId parameter.
In your case, just add an ID to your radio group (in order to retrieve it from your code)
<RadioGroup
android:id="#+id/category_group"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
And use the following code:
RadioGroup categoryGroup = (RadioGroup) findViewById(R.id.category_group);
categoryGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
switch(checkedId) {
case R.id.radioButtonincident:
// 'Incident' checked
fall.setVisibility(View.GONE);
trip.setVisibility(View.GONE);
illness.setVisibility(View.GONE);
break;
case R.id.radioButtonaccident:
// 'Accident' checked
break;
case R.id.radioButtonconcern:
// 'Concern' checked
break;
}
}
});

How to make Views with an Invisible attribute 'Visible' after clicking a button

I have several Views, text views, and a button that have the android:visibility="invisible" attribute. My goal is to click a button that resides above these 'invisible' widgets, so that these widgets will become visible. I created another java class called 'VisibilityActivity.java" and tried the following method. But for some reason when I run the app, the button doesn't do anything. I don't know what I'm missing.
Here's the code:
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class VisibilityActivity extends Activity {
private View mVictim;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.new_property3);
mVictim = findViewById(R.id.horizontalRule1);
mVictim = findViewById(R.id.TextView03);
mVictim = findViewById(R.id.horizontalRule2);
Button submitRating = (Button) findViewById(R.id.submitRatingButton);
submitRating.setOnClickListener(mVisibleListener);
}
OnClickListener mVisibleListener = new OnClickListener() {
public void onClick(View v) {
mVictim.setVisibility(View.INVISIBLE);
}
};
}
Here is the xml:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#drawable/custom_background"
android:isScrollContainer="true"
android:orientation="vertical"
android:paddingTop="10dp" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_gravity="center"
android:text="#string/ratingsInfo"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#color/black1" />
<View
android:layout_width="fill_parent"
android:layout_height="2dp"
android:background="#color/black1"
android:layout_marginLeft="2dp"
android:layout_marginRight="2dp"
android:layout_marginBottom="5dp" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:text="#string/yourRating"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/black1" />
<RatingBar
android:id="#+id/ratingBar1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="10dp" />
<Button
android:id="#+id/submitRatingButton"
android:layout_width="275dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="10dp"
android:background="#drawable/custom_button"
android:text="#string/submitRating"
android:textColor="#color/black1" />
<View
android:id="#+id/horizontalRule1"
android:layout_width="fill_parent"
android:layout_height="2dp"
android:background="#color/black1"
android:layout_marginLeft="2dp"
android:layout_marginRight="2dp"
android:layout_marginBottom="5dp"
android:visibility="invisible" />
<TextView
android:id="#+id/TextView03"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_gravity="center"
android:text="#string/summaryInfo"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#color/black1"
android:visibility="invisible" />
<View
android:id="#+id/horizontalRule2"
android:layout_width="fill_parent"
android:layout_height="2dp"
android:background="#color/black1"
android:layout_marginLeft="2dp"
android:layout_marginRight="2dp"
android:layout_marginBottom="5dp"
android:visibility="invisible" />
<TextView
android:id="#+id/TextView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:text="#string/ourRating"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/black1"
android:visibility="invisible" />
<RatingBar
android:id="#+id/ratingBar2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:stepSize=".01"
android:layout_marginBottom="10dp"
android:visibility="invisible" />
<TextView
android:id="#+id/TextView02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:text="#string/overallRating"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/black1"
android:visibility="invisible" />
<RatingBar
android:id="#+id/ratingBar3"
android:color="#color/black1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:stepSize=".01"
android:layout_marginBottom="40dp"
android:visibility="invisible" />
<Button
android:id="#+id/saveContinueButton3"
android:layout_width="275dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="15dp"
android:background="#drawable/custom_button"
android:text="#string/saveContinue"
android:textColor="#color/black1"
android:onClick="onSaveAndContinue3Clicked"
android:visibility="invisible" />
</LinearLayout>
</ScrollView>
Thanks. Help would be greatly appreciated!

I am updating user936414's answer.
OnClickListener mVisibleListener = new OnClickListener() {
public void onClick(View v) {
if( mText.getVisibility() == View.INVISIBLE )
mText.setVisibility(View.VISIBLE);
else
mText.setVisibility(View.INVISIBLE);
if( mRule1.getVisibility() == View.INVISIBLE )
mRule1.setVisibility(View.VISIBLE);
else
mRule1.setVisibility(View.INVISIBLE);
if( mRule2.getVisibility() == View.INVISIBLE )
mRule2.setVisibility(View.VISIBLE);
else
mRule2.setVisibility(View.INVISIBLE);
}
};
Also you might want to experiment with View.GONE.

findViewById(R.id.ratingBar3).setVisibility(View.VISIBLE);
findViewById(R.id.saveContinueButton3).setVisibility(View.VISIBLE);
you made it invisible view invisible again.. try the above code

Try
public class VisibilityActivity extends Activity {
private TextView mText;
private View mRule1, mRule2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.new_property3);
mText= (TextView)findViewById(R.id.horizontalRule1);
mRule1 = findViewById(R.id.TextView03);
mRule2 = findViewById(R.id.horizontalRule2);
Button submitRating = (Button) findViewById(R.id.submitRatingButton);
submitRating.setOnClickListener(mVisibleListener);
}
OnClickListener mVisibleListener = new OnClickListener() {
public void onClick(View v) {
mText.setVisibility(View.VISIBLE);
mRule1.setVisibility(View.VISIBLE);
mRule2.setVisibility(View.VISIBLE);
}
};
}

Button submitRating = (Button) findViewById(R.id.submitRatingButton);
submitRating.setOnClickListener(new View.onClickListener)
{
#Override
public void onClick(View v)
{
//Insert your code here
}
}

Develop Reference

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

Motion event error on ImageButton click - java

The findViewById() calls and especially the setOnClickListener() calls should have been inside the onCreate(). With setOnClickListener() inside the onClick() i doubt the onClick was ever called. We would need more logs to find the exact issue.

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