Simple SurfaceView example |
Create our custom MySurfaceView.java extends SurfaceView.
package com.example.androidsurfaceview;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.util.AttributeSet;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class MySurfaceView extends SurfaceView {
private SurfaceHolder surfaceHolder;
private Bitmap bmpIcon;
public MySurfaceView(Context context) {
super(context);
init();
}
public MySurfaceView(Context context,
AttributeSet attrs) {
super(context, attrs);
init();
}
public MySurfaceView(Context context,
AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
private void init(){
surfaceHolder = getHolder();
bmpIcon = BitmapFactory.decodeResource(getResources(),
R.drawable.ic_launcher);
surfaceHolder.addCallback(new SurfaceHolder.Callback(){
@Override
public void surfaceCreated(SurfaceHolder holder) {
Canvas canvas = holder.lockCanvas(null);
drawSomething(canvas);
holder.unlockCanvasAndPost(canvas);
}
@Override
public void surfaceChanged(SurfaceHolder holder,
int format, int width, int height) {
// TODO Auto-generated method stub
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
}});
}
protected void drawSomething(Canvas canvas) {
canvas.drawColor(Color.BLACK);
canvas.drawBitmap(bmpIcon,
getWidth()/2, getHeight()/2, null);
}
}
Modify /res/layout/activity_main.xml to include <...MySurfaceView>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.androidsurfaceview.MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:autoLink="web"
android:text="http://arteluzevida.blogspot.com/"
android:textStyle="bold" />
<com.example.androidsurfaceview.MySurfaceView
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
MainActivity.java
package com.example.androidsurfaceview;
import android.app.Activity;
import android.os.Bundle;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
Next:
- Create animation on SurfaceView in background Thread