Android(安卓)view刷新
16lz
2021-01-25
public class PuzzleView extends SurfaceView implements SurfaceHolder.Callback{
private SurfaceHolder surfaceHolder;
public PuzzleView(Context context){
//....
surfaceHolder = this.getHolder();//获取holder
surfaceHolder.addCallback(this);
}
protected void paint(Canvas canvas) {
//这里的代码跟继承View时OnDraw中一样
}
public void repaint() {
Canvas c = null;
try {
c = surfaceHolder.lockCanvas();
paint(c);
} finally {
if (c != null) {
surfaceHolder.unlockCanvasAndPost(c);
}
}
}
}
private SurfaceHolder surfaceHolder;
public PuzzleView(Context context){
//....
surfaceHolder = this.getHolder();//获取holder
surfaceHolder.addCallback(this);
}
protected void paint(Canvas canvas) {
//这里的代码跟继承View时OnDraw中一样
}
public void repaint() {
Canvas c = null;
try {
c = surfaceHolder.lockCanvas();
paint(c);
} finally {
if (c != null) {
surfaceHolder.unlockCanvasAndPost(c);
}
}
}
}
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