绘制surfaceView 基础类

public class SurfaceViewTempalte extends SurfaceView implements Callback, Runnable  {

private SurfaceHolder mHolder;
private Canvas mCanvas;

// 线程
Thread t;

// 线程开关
private boolean isRunning;

public SurfaceViewTempalte(Context context) {
this(context, null);
}
public SurfaceViewTempalte(Context context, AttributeSet attrs) {
super(context, attrs, 0);

mHolder = getHolder();
mHolder.addCallback(this);

//设置可获得焦点
setFocusable(true);
setFocusableInTouchMode(true);

//设置常亮
setKeepScreenOn(true);

}
@Override
public void surfaceCreated(SurfaceHolder holder) {
isRunning = true;
t = new Thread(this);
t.start();
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {

}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
isRunning = false;
}
@Override
public void run() {
//不断进行绘制
while(isRunning) {
draw();
}
}

private void draw() {
//try防止back无释放
try {
mCanvas = mHolder.lockCanvas();
if(mCanvas != null) {
//绘制

}
} catch (Exception e) {
}
finally {
//释放mCanvas
if(mCanvas != null) {
mHolder.unlockCanvasAndPost(mCanvas);
}
}
}

}