水波纹效果的例子
[代码] [Java]代码
public class AnimActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(new PlasmaView(this));
}
}
class PlasmaView extends View implements View.OnTouchListener{
private Bitmap mBitmap;
long time;
long fps;
public PlasmaView(Context context) {
super(context);
Bitmap bmp = BitmapFactory.decodeResource(this.getResources(),R.drawable.mm);
mBitmap = Bitmap.createBitmap(bmp.getWidth(), bmp.getHeight(), Bitmap.Config.RGB_565);
AnimRender.setBitmap(bmp);
this.setOnTouchListener(this);
}
@Override
protected void onDraw(Canvas canvas) {
long ct = System.currentTimeMillis();
if(ct - time > 1000){
Log.v("Fps:" + String.valueOf(fps));
time = ct;
fps = 0;
}
//fps++;
fps += 20;
AnimRender.render(mBitmap);
canvas.drawBitmap(mBitmap, 0, 0, null);
postInvalidate();
}
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
AnimRender.drop((int)event.getX(), (int)event.getY(), 1200);
return false;
}
}
class AnimRender{
public static native void setBitmap(Bitmap src);
public static native void render(Bitmap dst);
public static native void drop(int x, int y, int height);
static {
System.loadLibrary("plasma");
}
}