RadioButton RadioGroup Java Android example
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RadioButton RadioGroup Android example source code for Android developer
Example for *.xml files
Example for *.java files
Example for *.xml files
<RadioGroup android:id="@+id/idRadio_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:orientation="vertical">
<RadioButton android:id="@+id/idRadio_1"
android:text="@string/textLabel_1"/>
<RadioButton android:id="@+id/idRadio_2"
android:text="@string/textLabel_2"/>
<RadioButton android:id="@+id/idRadio_3"
android:text="@string/textLabel_3"/>
</RadioGroup>
Example for *.java files
// import
import android.widget.RadioGroup;
// get handle of RadioGroup
RadioGroup mRadioGroup = (RadioGroup) findViewById(R.id.idRadio_group);
// which RadioButton is selected for example in some function body
int nUnits = 10; // decimetry
int nIdRadio = mRadioGroup.getCheckedRadioButtonId();
if(nIdRadio == R.id.idRadio_1) nUnits = 1; // metr
else if(nIdRadio == R.id.idRadio_2) nUnits = 10; // decimetr
else if(nIdRadio == R.id.idRadio_3) nUnits = 100; // cm
else if(nIdRadio == R.id.idRadio_4) nUnits = 1000; // mm
// listener for RadioGroup Java Android example
mRadioGroup.setOnCheckedChangeListener(
new RadioGroup.OnCheckedChangeListener() {
public void onCheckedChanged(RadioGroup group,
int checkedId) {
Log.v("Selected", "New radio item selected: " + checkedId);
recordNewUIState();
}
});
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onSaveInstanceState, onRestoreInstanceState life cycle if screen orientation changed from log file.
Diagram of life cycle onSaveInstanceState, onRestoreInstanceState
[caption id="attachment_1169" align="alignleft" width="229" caption="Life cycle onRestoreInstanceState"]
[/caption]
// starts activity
15:27:12.801: INFO/onCreate(1828): onCreate()
15:27:12.811: INFO/onStart(1828): onStart()
15:27:12.821: INFO/onResume(1828): onResume()
// activity is running
15:27:33.651: DEBUG/dalvikvm(307): GC_EXPLICIT freed 186K, 53%
free 2770K/5831K, external 981K/1038K, paused 99ms
// change emulator state Ctrl+F11 landscape, portrait
15:27:40.427: INFO/ActivityManager(74): Config changed:
{ scale=1.0 imsi=310/260 loc=en_US touch=3 keys=2/1/2 nav=3/1 orien=2 layout=18 uiMode=17 seq=64}
// saved all variable values if need
15:27:40.581: INFO/onSaveInstanceState(1828): onSaveInstanceState()
15:27:40.602: INFO/onPause(1828): onPause()
15:27:40.612: INFO/onStop(1828): onStop()
15:27:40.631: INFO/onDestroy(1828): onDestroy()
// activity goes back to onCreate !!!!!!!!!
15:27:40.692: INFO/onCreate(1828): onCreate()
15:27:40.701: INFO/onStart(1828): onStart()
// restore all saved values of variables
15:27:40.711: INFO/onRestoreInstanceState(1828): onRestoreInstanceState()
// you can using saved values by onSaveInstanceState() in onResume
15:27:40.721: INFO/onResume(1828): onResume()
Diagram of life cycle onSaveInstanceState, onRestoreInstanceState
[caption id="attachment_1169" align="alignleft" width="229" caption="Life cycle onRestoreInstanceState"]

xml example source code with image.

<TableLayout android:layout_width="match_parent" android:id="@+id/idTableInRadioGroup" android:layout_height="wrap_content">
<TableRow android:id="@+id/tableRow1" android:layout_width="wrap_content" android:layout_height="wrap_content">
<RadioGroup android:id="@+id/idRadio_group_1_column"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:orientation="vertical">
<RadioButton android:id="@+id/idRadio_1"
android:text="@string/textLabel_1"/>
<RadioButton android:id="@+id/idRadio_2"
android:text="@string/textLabel_2"/>
<RadioButton android:id="@+id/idRadio_3"
android:text="@string/textLabel_3"/>
</RadioGroup>
<RadioGroup android:id="@+id/idRadio_group_2_column"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:orientation="vertical">
<RadioButton android:id="@+id/idRadio_4"
android:text="@string/textLabel_4"/>
<RadioButton android:id="@+id/idRadio_5"
android:text="@string/textLabel_5"/>
<RadioButton android:id="@+id/idRadio_6"
android:text="@string/textLabel_6"/>
</RadioGroup>
</TableRow>
</TableLayout>

public class ApokusActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new SampleView(this));
}
private static class SampleView extends View {
// CONSTRUCTOR
public SampleView(Context context) {
super(context);
setFocusable(true);
}
@Override
protected void onDraw(Canvas canvas) {
Paint paint = new Paint();
canvas.drawColor(Color.GREEN);
Bitmap b = Bitmap.createBitmap(200, 200, Bitmap.Config.ALPHA_8);
Canvas c = new Canvas(b);
c.drawRect(0, 0, 200, 200, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC));
paint.setTextSize(40);
paint.setTextScaleX(1.f);
paint.setAlpha(0);
paint.setAntiAlias(true);
c.drawText("Your text", 30, 40, paint);
paint.setColor(Color.RED);
canvas.drawBitmap(b, 10,10, paint);
}
}
}

AdMob in Android emulator not visible?
You have to using some from this libraries:
GoogleAdMobAdsSdk-4.3.1.jar
GoogleAdMobAdsSdk-6.0.1.jar
GoogleAdMobAdsSdk-6.2.1.jar
AndroidManifest.xml
onCreate in your Activity.java
main.xml (res/layout)
You have to using some from this libraries:
GoogleAdMobAdsSdk-4.3.1.jar
GoogleAdMobAdsSdk-6.0.1.jar
GoogleAdMobAdsSdk-6.2.1.jar
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="//schemas.android.com/apk/res/android"
package="cz.okhelp.admob"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="13"
android:targetSdkVersion="16"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application android:icon="@drawable/ic_launcher" android:label="@string/app_name">
<meta-data
android:value="a14d932xxxxxxxx"
android:name="ADMOB_PUBLISHER_ID" />
<activity android:name=".AdmobActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.google.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" />
</application>
</manifest>
onCreate in your Activity.java
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
AdViw adView = new AdView(this, AdSize.BANNER, "a14d932xxxxxxxxx");//MY_AD_UNIT_ID
LinearLayout layout = (LinearLayout)findViewById(R.id.idReklamaLayout);
// Add the adView to it
layout.addView(adView);
// Initiate a generic request to load it with an ad
AdRequest adRequest = new AdRequest();
//adRequest.setTesting(true);
adRequest.setGender(AdRequest.Gender.MALE);
adView.loadAd(adRequest);
}
main.xml (res/layout)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
android:id="@+id/idReklamaLayout"
android:orientation="vertical"
android:gravity="center"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="3" />
</LinearLayout>
Editace: 2011-09-26 20:48:27
Počet článků v kategorii: 396
Url:radiobutton-radiogroup-android-example
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