Create RadioButton RadioGroup dynamically - Android sample
public class MainActivity extends Activity implements OnClickListener {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
LinearLayout layout = (LinearLayout) findViewById(R.id.layout);
RadioGroup radioGroup = new RadioGroup(this);
LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT
);
layout.addView(radioGroup, p);
RadioButton radioButtonView = new RadioButton(this);
radioButtonView.setText("RadioButton");
radioButtonView.setOnClickListener(this);
radioGroup.addView(radioButtonView, p);
RadioButton radioButtonView2 = new RadioButton(this);
radioButtonView2.setText("RadioButton2");
radioButtonView2.setOnClickListener(mThisButtonListener);
radioGroup.addView(radioButtonView2, p);
}
public void onClick(View view) {
try {
String s = ((RadioButton) view).getText().toString();
Toast.makeText(MainActivity.this, "This is: " + s,
Toast.LENGTH_LONG).show();
}
catch (Exception e1) {
e1.printStackTrace();
}
}
private OnClickListener mThisButtonListener = new OnClickListener() {
public void onClick(View v) {
String s = ((RadioButton) v).getText().toString();
Toast.makeText(MainActivity.this, "Hello from 2!" + s,
Toast.LENGTH_LONG).show();
}
};
}
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Další témata ....(Topics)
C:\documents\workspace\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.jdt.ui.prefs
How include layout defined in other xml file into another xml file example:
res/layout/my_layout.xml into
main.xml
res/layout/my_layout.xml into
main.xml
<include layout="@layout/my_layout" android:id="@+id/idMyLayout" />
Change table row background color if user click on row Android example code.
MainActivity.java
main.xml
strings.xml
MainActivity.java
public class MainActivity extends Activity {
Boolean bColorYellow = true;
TextView hTextView;
TableRow hTableRow;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
hTextView = (TextView)findViewById(R.id.idTextView);
hTableRow = (TableRow)findViewById(R.id.idTableRow1);
} // end onCreate
public void myTableRowClickHandler(View view) {
switch (view.getId()) {
case R.id.idTableRow1:{
if(bColorYellow){
hTableRow.setBackgroundColor(Color.GREEN);
bColorYellow = false;
}
else{
hTableRow.setBackgroundColor(Color.YELLOW);
bColorYellow = true;
}
}
break;
}
}
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TableLayout android:layout_height="wrap_content" android:layout_width="fill_parent" android:id="@+id/tableLayout1">
<TableRow android:id="@+id/idTableRow1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#5655AA"
android:onClick="@string/myTableRowClick"
android:focusable="true">
<TextView
android:id="@+id/idTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
</TableRow>
</TableLayout>
</LinearLayout>
strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World!</string>
<string name="app_name">TableRow</string>
<string name="myTableRowClick">myTableRowClickHandler</string>
</resources>
How to resize an image in ImageView Android source code.
Resize imageview layout and image will resize too:
Resize imageview layout and image will resize too:
public void resizeImageView(int width, int height) {
final ImageView picture1 = (ImageView)findViewById(R.id.imageView1);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(width, height);
picture1.setLayoutParams(layoutParams);
}
Eclipse: failed to create the java virtual machine - message box
- Open folder with Eclipse.exe and find eclipse.ini file
- Replace -vmargs
by your current real path of javaw.exe:
-vm "c:\Program Files\Java\jdk1.7.0_07\bin\javaw.exe"
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.200.v20120522-1813
-product
com.android.ide.eclipse.adt.package.product
--launcher.XXMaxPermSize
256M
-showsplash
com.android.ide.eclipse.adt.package.product
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vm "c:\Program Files\Java\jdk1.7.0_07\bin\javaw.exe”
-Dosgi.requiredJavaVersion=1.6
-Xms40m
-Xmx768m
-Declipse.buildId=v21.1.0-569685
Editace: 2011-10-22 08:30:24
Počet článků v kategorii: 396
Url:create-radiobutton-radiogroup-dynamically-android-sample
