SeekBar listener Android Example Source

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SeekBar setOnSeekBarChangeListener Example. Change TextView font size by SeekBar Example.


        TextView mTextView01 = (TextView)findViewById(R.id.textView01);

        SeekBar  mSeekBarTexSize = (SeekBar)findViewById(R.id.seekBarTextSize);
        mSeekBarTexSize.setMax(100);
        mSeekBarTexSize.setProgress(25);

        mSeekBarTexSize.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
            	mTextView01.setTextSize((float)progress);
            }

            public void onStartTrackingTouch(SeekBar seekBar) {}
            public void onStopTrackingTouch(SeekBar seekBar) {}
        });

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239

Admob ads not visible on emulator Android 4.1 | admob-ads-not-visible-on-emulator-android-4-1

If you using GoogleAdMobAdsSdk-4.0.4.jar in your project and set android:targetSdkVersion="17" in AndroidManifest.xml , ads will not visible on emulator with Android 4.0.3 or 4.1.
You have to set as android:targetSdkVersion="17"


<uses-sdk android:minSdkVersion="4" 
        android:targetSdkVersion="17" />

Update project.properties file - row with target to 17:


# Project target.
target=android-17

304

xml string with html tags Android | xml-string-with-html-tags-android


// in strings.xml
<string name="myStringWithTags"><![CDATA[<b>some text..</b> other tags ...]]></string>
<string name="myStringWithPattern"><![CDATA[<b>%s</b> other tags ...]]></string>
// in Activity.class
String sHtmlText = this.getApplicationContext().getString(R.string.myStringTags);
         sHtmlText = this.getApplicationContext().getString(R.string.myStringWithPattern,"replace %s with this text");

Change TableRow background color if on row click Android example | change-tablerow-background-color-if-on-row-click-android-example

Change table row background color if user click on row Android example code.
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>

132

Draw circle Android basic example | draw-circle-android-basic-example

Canvas, drawCircle(), Paint, onDraw(), setStrokeWidth(), setStyle()


public class MainActivity 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) {

			canvas.drawColor(Color.CYAN);
			Paint p = new Paint();
			// smooths
			p.setAntiAlias(true);
			p.setColor(Color.RED);
			p.setStyle(Paint.Style.STROKE); 
			p.setStrokeWidth(4.5f);
			// opacity
			//p.setAlpha(0x80); //
			canvas.drawCircle(50, 50, 30, p);
		}

	}
}

168

Android SDK Samples as a Photo Gallery | android-sdk-samples-as-photo-serial

Photo Gallery of Android SDK Samples.
For better understanding of what the source knows there is a gallery of images.
After clicking on the preview displays the actual size and Titlebar
You can read the path to the source file as: Graphics/AnimateDrawables see the project folder
/ApiDemos/src/com/example/android/apis/graphics/AnimateDrawable.java

Editace: 2013-02-28 13:40:26
Počet článků v kategorii: 397
Url:seekbar-listener-android-example-source

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