How do I identify buttons right inside Java Activity Class?

How do I identify buttons right inside Java Activity Class? - java

I designed two buttons b1,b2 inside "KeyboardService.java" which should update the value of PACK_LIB inside "Stickers.java".
Three files attached:
main_board_layout.xml
Stickers.java
KeyboardService.java
I assigned both buttons with IDs of Button1 = b1 and Button2 = b2.
The built is successful but when I click on the buttons both do not work.
I think it is maybe a problem with this line ->
final Button button1 = (Button) mainBoard.findViewById(R.id.b1);
Because the Buttons are inside a FrameLayout. But when I use ID of that it won't work either.
Any ideas?
-------main_board_layout.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/main_board"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#color/black"
android:orientation="vertical">
<android.inputmethodservice.KeyboardView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/keyboard_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/black" />
<!--top bar-->
<View
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#ffffff"/>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#ffffff"
android:padding="2dp"
android:id="#+id/buttons"
>
<Button
android:id="#+id/b1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/button1" />
<Button
android:id="#+id/b2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:text="#string/button2"
/>
<TextView
android:id="#+id/packNameLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="start"
android:text="#string/app_name"
android:textColor="#000000"
android:textSize="1sp"
android:visibility="gone"
/>
<ImageView
android:id="#+id/btShareLinkGP"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:src="#mipmap/bt_share"
tools:srcCompat="#mipmap/bt_share"
/>
</FrameLayout>
<View
android:layout_width="match_parent"
android:layout_height="3dp"
android:background="#000000"/>
<ScrollView
android:id="#+id/gif_view"
android:layout_width="match_parent"
android:layout_height="190dp"
android:background="#color/black"
android:paddingLeft="0dp"
android:paddingRight="15dp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/black"
android:gravity="left|center"
android:orientation="horizontal"
android:padding="0dp">
<android.support.v7.widget.RecyclerView
android:id="#+id/pack_recycler_view"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#color/black"
android:orientation="horizontal"
app:layoutManager="android.support.v7.widget.LinearLayoutManager" />
</LinearLayout>
</LinearLayout>
-------Stickers.java
public static String PACK_LIB ="";
public void setDefaultStickerPack() {
checkVersion(true);
InputStream in = null;
String packList[]=new String[0];
final String PACK_APP="pack_app";
final String PACK_ICON="pack_on.png";
String curAssets="";
-------KeyboardService.java
#Override
public View onCreateInputView() {
mainBoard = (LinearLayout) getLayoutInflater().inflate(R.layout.main_board_layout, null);
packNameLabel = (TextView) mainBoard.findViewById(R.id.packNameLabel);
scrollView = (ScrollView) mainBoard.findViewById(R.id.gif_view);
stickerView = (RecyclerView) getLayoutInflater().inflate(R.layout.recycler_view, null);
stickerView.addItemDecoration(new MarginDecoration(this));
stickerView.setHasFixedSize(true);
stickerView.setLayoutManager(new GridLayoutManager(this, 4));
scrollView.addView(stickerView);
ImageView btShareLinkGP = (ImageView) mainBoard.findViewById(R.id.btShareLinkGP);
btShareLinkGP.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
shareLinkToGP();
}
});
// packs bar
packView = (RecyclerView) mainBoard.findViewById(R.id.pack_recycler_view);
// BUTTONS ACTIONS
final Button button1 = (Button) mainBoard.findViewById(R.id.b1);
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Stickers.PACK_LIB = "allstickers";
}
});
final Button button2 = (Button) mainBoard.findViewById(R.id.b2);
button2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Stickers.PACK_LIB = "teststickers";
}
});
showStickers();
return mainBoard;
}

Related

Get value of a EditText in another layout

I have an dialog that appears where the user can costumize how many points they get from each action. The dialog is based on a layout that is not the main_activity. the main activity is the layout that is used in setContentView in the onCreate method.
when I try to get the values I am only getting null, (because the layout where the EditText is is not set as the contentview.... maybe?)
How do I solve this problem so that I get the value of the edittext in the "settings" layout and can use that value in the MainActivity?
private int teamOnePoints=0;
private int teamTwoPoints=0;
private boolean teamOneField=true;
private int burnedPoints = 1;
private int lyrePoints= 3;
private int oneHandLyrePoints = 5;
private int homeRunPoints=5;
private int revPoints=1;
private String teamOneName = "Lag 1";
private String teamTwoName = "Lag 2";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ToggleButton toggle = (ToggleButton)
findViewById(R.id.field_team_toggle); //activates toggle button
toggle.setOnCheckedChangeListener(new
CompoundButton.OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean
isChecked) {
if (isChecked) {
//changes between the teams
teamOneField=false;
} else {
teamOneField=true;
}
}
});
FloatingActionButton fab = findViewById(R.id.points_edit_button);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
openDialog();
}
});
}
public void openDialog() {
AlertDialog.Builder builder = new
AlertDialog.Builder(MainActivity.this);
LayoutInflater inflater = this.getLayoutInflater();
View v = inflater.inflate(R.layout.settings, null);
builder.setView(v);
builder.setTitle(getResources().getString(R.string.edit_rules));
builder.setPositiveButton(getResources().getString(R.string.ok_button),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
applySettings();
}
});
builder.setNegativeButton(getResources().getString(R.string.cancel_button),
null);
builder.show();
}
private void applySettings(){
EditText newBurnedPoints = findViewById(R.id.burned_edit);
burnedPoints=Integer.parseInt(newBurnedPoints.getText().toString());
EditText newLyrePoints = findViewById(R.id.lyre_edit);
lyrePoints=Integer.parseInt(newLyrePoints.getText().toString());
EditText newOneHandLyrePoints = findViewById(R.id.one_hand_lyre_edit);
oneHandLyrePoints=Integer.parseInt
(newOneHandLyrePoints.getText().toString());
EditText newHomeRunPoints = findViewById(R.id.home_run_edit);
homeRunPoints=Integer.parseInt(newHomeRunPoints.getText().toString());
EditText newRevPoints = findViewById(R.id.rev_edit);
revPoints=Integer.parseInt(newRevPoints.getText().toString());
EditText newTeamOneName = findViewById(R.id.name_one_edit);
teamOneName= newTeamOneName.getText().toString();
TextView setNewTeamOneName = (TextView)findViewById(R.id.name_one);
setNewTeamOneName.setText(teamOneName);
EditText newTeamTwoName =findViewById(R.id.name_two_edit);
teamTwoName= newTeamTwoName.getText().toString();
TextView setNewTeamTwoName = (TextView)findViewById(R.id.name_two);
setNewTeamTwoName.setText(teamTwoName);
}
SETTINGS LAYOUT:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="24dp"
android:id="#+id/settings_layout"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<TextView
android:id="#+id/name_one_settings"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/name_team_one"
style="#style/settings_headings"
/>
<TextView
android:id="#+id/name_two_settings"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/name_team_two"
style="#style/settings_headings"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<EditText
android:id="#+id/name_one_edit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="#string/team_one"
android:maxLength="20"
android:singleLine="true"
/>
<EditText
android:id="#+id/name_two_edit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="#string/team_two"
android:maxLength="20"
android:singleLine="true"
/>
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/burned_points"
android:paddingTop="16dp"
style="#style/settings_headings"/>
<EditText
android:id="#+id/burned_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="1"
android:maxLength="2"
android:inputType="number"
android:singleLine="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/lyre_points"
android:paddingTop="16dp"
style="#style/settings_headings"/>
<EditText
android:id="#+id/lyre_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="3"
android:maxLength="2"
android:inputType="number"
android:singleLine="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/one_hand_lyre_points"
android:paddingTop="16dp"
style="#style/settings_headings"/>
<EditText
android:id="#+id/one_hand_lyre_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="5"
android:maxLength="2"
android:inputType="number"
android:singleLine="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/home_run_points"
android:paddingTop="16dp"
style="#style/settings_headings"/>
<EditText
android:id="#+id/home_run_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="5"
android:maxLength="2"
android:inputType="number"
android:singleLine="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/rev_points"
android:paddingTop="16dp"
style="#style/settings_headings"/>
<EditText
android:id="#+id/rev_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="1"
android:maxLength="2"
android:inputType="number"
android:singleLine="true"/>
</LinearLayout>
MAIN LAYOUT
<?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:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity"
>
<LinearLayout
android:id="#+id/team_names"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<TextView
android:id="#+id/name_one"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/team_one"
style="#style/Headings"
/>
<TextView
android:id="#+id/name_two"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/team_two"
style="#style/Headings"
/>
</LinearLayout>
<LinearLayout
android:id="#+id/team_points"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="#+id/points_one"
android:layout_width="0dp"
android:layout_height="88dp"
android:layout_weight="1"
android:autoSizeTextType="uniform"
android:text="0"
style="#style/TeamPoints"
/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="16dp"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/field_team"/>
<ToggleButton
android:id="#+id/field_team_toggle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textOff="#string/team_one"
android:textOn="#string/team_two"
style="#style/buttons"/>
</LinearLayout>
<TextView
android:id="#+id/points_two"
android:layout_width="0dp"
android:layout_height="88dp"
android:layout_weight="1"
android:autoSizeTextType="uniform"
android:text="0"
style="#style/TeamPoints"
/>
</LinearLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="#string/events"
android:paddingTop="16dp"
style="#style/Headings"/>
<TableLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
>
<Button
android:id="#+id/burned_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="burned"
android:text="#string/burned"
style="#style/buttons"/>
<Button
android:id="#+id/lyre_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="lyre"
android:text="#string/lyre"
style="#style/buttons"
/>
<Button
android:id="#+id/one_hand_lyre_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="oneHandLyre"
android:text="#string/oneHandLyre"
style="#style/buttons"
/>
<Button
android:id="#+id/homeRun_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="homeRun"
android:text="#string/homeRun"
style="#style/buttons"
/>
<Button
android:id="#+id/rev_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="rev"
android:text="#string/rev"
style="#style/buttons"
/>
</TableLayout>
<Button
android:id="#+id/reset_button"
android:layout_width="168dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|bottom"
android:layout_marginTop="16dp"
android:onClick="reset"
android:text="#string/reset"
style="#style/buttons"
/>
<android.support.design.widget.FloatingActionButton
android:id="#+id/points_edit_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:src="#android:drawable/ic_menu_edit"
android:layout_margin="16dp" />
</LinearLayout>

I would strongly recommend using SharedPreferences. This way, you can access the data even if you restart your application. If that does not work for you, you can use Intent.
Consider reading this StackOverflow post.
Using SharedPreferences:
SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putInt(getString(R.string.points), pointsPerActivity);
editor.commit();
SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
int defaultValue = 1;
// or you can store the value somewhere
// getResources().getInteger(R.integer.defaultPointsPerActivity);
int pointsPerActivity = sharedPref.getInt(pointsPerActivity, defaultValue);

pass view object in applySettings(v);
private int teamOnePoints=0;
private int teamTwoPoints=0;
private boolean teamOneField=true;
private int burnedPoints = 1;
private int lyrePoints= 3;
private int oneHandLyrePoints = 5;
private int homeRunPoints=5;
private int revPoints=1;
private String teamOneName = "Lag 1";
private String teamTwoName = "Lag 2";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ToggleButton toggle = (ToggleButton)
findViewById(R.id.field_team_toggle); //activates toggle button
toggle.setOnCheckedChangeListener(new
CompoundButton.OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean
isChecked) {
if (isChecked) {
//changes between the teams
teamOneField=false;
} else {
teamOneField=true;
}
}
});
FloatingActionButton fab = findViewById(R.id.points_edit_button);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
openDialog();
}
});
}
public void openDialog() {
AlertDialog.Builder builder = new
AlertDialog.Builder(MainActivity.this);
LayoutInflater inflater = this.getLayoutInflater();
View v = inflater.inflate(R.layout.settings, null);
builder.setView(v);
builder.setTitle(getResources().getString(R.string.edit_rules));
builder.setPositiveButton(getResources().getString(R.string.ok_button),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
applySettings(v);
}
});
builder.setNegativeButton(getResources().getString(R.string.cancel_button),
null);
builder.show();
}
private void applySettings(View view){
EditText newBurnedPoints = view.findViewById(R.id.burned_edit);
burnedPoints=Integer.parseInt(newBurnedPoints.getText().toString());
EditText newLyrePoints = view.findViewById(R.id.lyre_edit);
lyrePoints=Integer.parseInt(newLyrePoints.getText().toString());
EditText newOneHandLyrePoints = view.findViewById(R.id.one_hand_lyre_edit);
oneHandLyrePoints=Integer.parseInt
(newOneHandLyrePoints.getText().toString());
EditText newHomeRunPoints = view.findViewById(R.id.home_run_edit);
homeRunPoints=Integer.parseInt(newHomeRunPoints.getText().toString());
EditText newRevPoints = view.findViewById(R.id.rev_edit);
revPoints=Integer.parseInt(newRevPoints.getText().toString());
EditText newTeamOneName = view.findViewById(R.id.name_one_edit);
teamOneName= newTeamOneName.getText().toString();
TextView setNewTeamOneName = (TextView)findViewById(R.id.name_one);
setNewTeamOneName.setText(teamOneName);
EditText newTeamTwoName =view.findViewById(R.id.name_two_edit);
teamTwoName= newTeamTwoName.getText().toString();
TextView setNewTeamTwoName = (TextView)findViewById(R.id.name_two);
setNewTeamTwoName.setText(teamTwoName);
}

Android Popup Menu fill parent

I try set my popup menu in way to fill hole item on grid. Currently it look like on attached first picture and the next one is effect which I would like to have.
My code:
private void showPopupMenu(View view) {
// inflate menu
ContextThemeWrapper ctw = new ContextThemeWrapper(context, R.style.PopupMenu);
PopupMenu popup = new PopupMenu(ctw, view);
Menu menu = popup.getMenu();
menu.add(Menu.NONE, 1, Menu.NONE, "Remove");
menu.add(Menu.NONE, 2, Menu.NONE, "Block");
popup.setOnMenuItemClickListener(new MyMenuItemClickListener());
popup.show();
}
Could you please point me to right direction to achieve effect from project?

Demo App for your requirment by using PopupWindow. Preview
You can add list in it or customize it according to your needs.
MainActivity
public class MainActivity extends Activity {
boolean isClicked = true;
PopupWindow popUpWindow;
RelativeLayout relative;
ImageView btnClickHere;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
relative = (RelativeLayout) findViewById(R.id.relative);
popUpWindow = new PopupWindow(this);
popUpWindow.setContentView(getLayoutInflater().inflate(R.layout.popup_design, null));
popUpWindow.getContentView().findViewById(R.id.textViewa).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "PopItemClicked", Toast.LENGTH_LONG).show();
}
});
btnClickHere = (ImageView) findViewById(R.id.imageView);
btnClickHere.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (isClicked) {
isClicked = false;
popUpWindow.setHeight(relative.getHeight());
popUpWindow.setWidth(relative.getWidth());
popUpWindow.showAsDropDown(relative, 0, -relative.getHeight());
} else {
isClicked = true;
popUpWindow.dismiss();
}
}
});
}
}
activity_main.xml
<?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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.sohailzahid.testapp.MainActivity">
<RelativeLayout
android:id="#+id/relative"
android:layout_width="150dp"
android:layout_height="150dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:background="#color/colorAccent"
tools:layout_editor_absoluteX="150dp"
tools:layout_editor_absoluteY="150dp">
<ImageView
android:id="#+id/imageView"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:src="#android:drawable/arrow_down_float" />
</RelativeLayout>
</RelativeLayout>
popup_design.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="#F93567">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/textViewa"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="Block"
android:textColor="#ffffff"
android:textSize="20dp" />
<TextView
android:id="#+id/textVsiewa"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="Add to friends"
android:textColor="#ffffff"
android:textSize="20dp" />
<TextView
android:id="#+id/textViesw"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="Remove"
android:textColor="#ffffff"
android:textSize="20dp" />
</LinearLayout>
<ImageView
android:id="#+id/imageView"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_margin="10dp"
android:src="#android:drawable/arrow_down_float" />
</RelativeLayout>

Try this
popup.getWindow().getAttributes().height = ViewGroup.LayoutParams.MATCH_PARENT;
popup.getWindow().getAttributes().width = ViewGroup.LayoutParams.MATCH_PARENT;

Motion event error on ImageButton click

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.

onClickListener cause app crash

I have a problem with onClickListener method. When it's called application crashes. I have been searching for solution but seems like my code have everything what has been told.
public class Sudoku extends Activity implements OnClickListener {
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sudoku);
View continue_button = findViewById(R.id.continue_button);
continue_button.setOnClickListener(this);
View new_button = findViewById(R.id.new_button);
new_button.setOnClickListener(this);
View about_button = findViewById(R.id.about_button);
about_button.setOnClickListener(this);
View exit_button = findViewById(R.id.exit_button);
exit_button.setOnClickListener(this);
}
// ...
public void onClick(View v)
{
switch (v.getId())
{
case R.id.about_button:
Intent i = new Intent(this, About.class);
startActivity(i);
break;
}
}
}
--
public class About extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_about);
}
}
And main activity:
<?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:background="#color/background"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="30dip"
tools:context=".Sudoku" >
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/main_tittle"
android:gravity="center"
android:textColor="#color/main_tittle"
android:textSize="25sp"
android:layout_marginBottom="25dip"/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/continue_label" />
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/new_game_label" />
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/about_label" />
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/exit_label" />
</LinearLayout>
</LinearLayout>
I'm very beginner in android/java programming, please be forgiving.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="25dip"
android:gravity="center"
android:id="#+id/main_tittle"
android:textSize="25sp" />
<Button
android:id="#+id/continue_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<Button
android:id="#+id/new_game_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<Button
android:id="#+id/about_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<Button
android:id="#+id/exit_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sudoku);
View continue_button = findViewById(R.id.continue_button); /// findviewbyid not by text String resource
continue_button.setOnClickListener(this);
View new_button = findViewById(R.id.new_button);
new_button.setOnClickListener(this);
View about_button = findViewById(R.id.about_button);
about_button.setOnClickListener(this);
View exit_button = findViewById(R.id.exit_button);
exit_button.setOnClickListener(this);
}

I don't see any id's being declared for your Buttons in the xml.
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/about_button"
android:text="#string/about_label" />

If you are using Button then also you are using View
you are using this
View continue_button = findViewById(R.id.continue_button);
continue_button.setOnClickListener(this);
View new_button = findViewById(R.id.new_button);
new_button.setOnClickListener(this);
View about_button = findViewById(R.id.about_button);
about_button.setOnClickListener(this);
View exit_button = findViewById(R.id.exit_button);
exit_button.setOnClickListener(this);
It should be like this
Button continue_button = (Button)findViewById(R.id.continue_button);
continue_button.setOnClickListener(this);
Button new_button = (Button)findViewById(R.id.new_button);
new_button.setOnClickListener(this);
Button about_button =(Button) findViewById(R.id.about_button);
about_button.setOnClickListener(this);
Button exit_button =(Button) findViewById(R.id.exit_button);
exit_button.setOnClickListener(this);
you have post xml file in every button add id attribute like this
(in every Button tag)
<Button
android:id="#+id/continue_button"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/continue_label" />
<Button
android:id="#+id/new_button"
android:id="#+id/new_game_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<Button
android:id="#+id/about_button"
android:id="#+id/about_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<Button
android:id="#+id/exit_button"
android:id="#+id/exit_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />

How to create a Stack Panel menu in Android SDK?

I'd like to create a menu for my widget configuration similar like GWT Stack Panel
Is it posible to create similar type of Menu in android.? Any Help or suggestions are welcome.

use this layout :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button
android:text="Bt1"
android:id="#+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"></Button>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:id="#+id/linearLayout1">
<ImageView
android:layout_width="wrap_content"
android:id="#+id/imageView1"
android:layout_height="wrap_content"
android:src="#drawable/icon"></ImageView>
</LinearLayout>
<Button
android:text="Bt2"
android:id="#+id/button2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"></Button>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:id="#+id/linearLayout2">
<ImageView
android:layout_width="wrap_content"
android:id="#+id/imageView2"
android:layout_height="wrap_content"
android:src="#drawable/icon"></ImageView>
</LinearLayout>
<Button
android:text="Bt3"
android:id="#+id/button3"
android:layout_width="fill_parent"
android:layout_height="wrap_content"></Button>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:id="#+id/linearLayout3">
<ImageView
android:layout_width="wrap_content"
android:id="#+id/imageView3"
android:layout_height="wrap_content"
android:src="#drawable/icon"></ImageView>
</LinearLayout>
</LinearLayout>
and use this code :
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViewById(R.id.linearLayout1).setVisibility(View.GONE);
findViewById(R.id.linearLayout2).setVisibility(View.GONE);
findViewById(R.id.linearLayout3).setVisibility(View.GONE);
Button bt1=(Button) findViewById(R.id.button1);
Button bt2=(Button) findViewById(R.id.button2);
Button bt3=(Button) findViewById(R.id.button3);
bt1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
findViewById(R.id.linearLayout1).setVisibility(View.VISIBLE);
findViewById(R.id.linearLayout2).setVisibility(View.GONE);
findViewById(R.id.linearLayout3).setVisibility(View.GONE);
}
});
bt2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
findViewById(R.id.linearLayout1).setVisibility(View.GONE);
findViewById(R.id.linearLayout2).setVisibility(View.VISIBLE);
findViewById(R.id.linearLayout3).setVisibility(View.GONE);
}
});
bt3.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
findViewById(R.id.linearLayout1).setVisibility(View.GONE);
findViewById(R.id.linearLayout2).setVisibility(View.GONE);
findViewById(R.id.linearLayout3).setVisibility(View.VISIBLE);
}
});
}
you can use your layout in the linearlayout1,linearlayout2 and linearlayout3 for build stack panel for android.

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