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public class welcomeView extends SurfaceView implements SurfaceHolder.Callback {
private static final String TAG = "welcomeView";
private Bitmap m_bmpWelcomebackage;
private threadWelcome m_thread;
//构造
public welcomeView(Context context) {
super(context);
SurfaceHolder holder = getHolder();
m_thread = new threadWelcome(this, holder);
holder.addCallback(this);
loadPicture();
}
/*
* 函数介绍:界面创建
* 回调函数,来自SurfaceHolder.Callback
* 不会凭空跑,需addCallback后才可
* 输入参数:holder,表面主
* 输出参数:无
* 返回值 :无
*/
@Override
public void surfaceCreated(SurfaceHolder holder) {
Log.v(TAG, "surfaceCreated enter");
if (null != m_thread)
{
Log.v(TAG, "thread start");
m_thread.setSurfaceSupport(true);
m_thread.start(); //最小化后,再次经过此行,崩
}
Log.v(TAG, "surfaceCreated exit");
}
/*
* 函数介绍:界面变更
* 回调函数,来自SurfaceHolder.Callback
* 不会凭空跑,需addCallback后才可
* 输入参数:holder,表面主;format,像素格式;width,宽;height,高
* 输出参数:无
* 返回值 :无
*/
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
Log.v(TAG, "surfaceChanged enter");
Log.v(TAG, "surfaceChanged exit");
}
/*
* 函数介绍:界面摧毁
* 回调函数,来自SurfaceHolder.Callback
* 不会凭空跑,需addCallback后才可
* 输入参数:holder,表面主
* 输出参数:无
* 返回值 :无
*/
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
Log.v(TAG, "surfaceDestroyed enter");
if (null != m_thread)
{
Log.v(TAG, "thread stop");
m_thread.setSurfaceSupport(false);
m_thread.stop();
}
Log.v(TAG, "surfaceDestroyed exit");
}
/*
* 函数介绍:屏幕监听
* 重载函数,来自View
* 可以凭空跑了,点击屏幕即可
* 编译器现象:return true行跑完,下一行会落在return super.onTouchEvent(event)
* 输入参数:event,事件类型
* 输出参数:无
* 返回值 :True,已受理;false,未受理
*/
@Override
public boolean onTouchEvent(MotionEvent event) {
Log.v(TAG, "onTouchEvent enter");
if (event.getAction() == MotionEvent.ACTION_DOWN)
{
Log.v(TAG, "onTouchEvent : action down enter");
Log.v(TAG, "onTouchEvent : action down exit");
return true;
}
Log.v(TAG, "onTouchEvent exit");
return super.onTouchEvent(event);
}
/*
* 线程类介绍:线程
* 以刷帧之用
*/
class threadWelcome extends Thread {
private welcomeView m_wView;
private SurfaceHolder m_sHolder;
private boolean m_bSurface;
/*
* 函数介绍:构造器
* 需要提供包裹类的view和holder,以方便run函数对数据的访问和操作
* 输入参数:v, 视; holder,拥有者
* 输出参数:无
* 返回值 :无
*/
public threadWelcome(welcomeView view, SurfaceHolder sHolder) {
Log.v(TAG, "threadWelcome enter");
m_wView = view;
m_sHolder = sHolder;
Log.v(TAG, "threadWelcome exit");
}
/*
* 函数介绍:线程运行
* 重载函数,来自Thread
* 不会凭空跑,需new此类实例,且start才可
* 输入参数:无
* 输出参数:无
* 返回值 :无
*/
@Override
public void run() {
Log.v(TAG, "run enter");
Canvas cvs;
while (m_bSurface) {
Log.v(TAG, "runing it is...");
cvs = null;
try {
cvs = m_sHolder.lockCanvas(null);
synchronized (m_sHolder) {
m_wView.drawPicture(cvs);
Thread.sleep(100);
}
}
catch (Exception e) {
e.printStackTrace();
}
finally {
m_sHolder.unlockCanvasAndPost(cvs);
}
}
Log.v(TAG, "run exit");
}
/*
* 函数介绍:设置循环标记位
* 输入参数:flag,true循环 false不循环
* 输出参数:无
* 返回值 :无
*/
public void setSurfaceSupport(boolean bSur) {
m_bSurface = bSur;
}
}
/*
* 函数介绍:从资源里加载图片
* 源文件不能有大写字母
* 输入参数:无
* 输出参数:无
* 返回值 :无
*/
private void loadPicture() {
Log.v(TAG, "loadMusic enter");
Resources res = getResources();
m_bmpWelcomebackage = BitmapFactory.decodeResource(res, R.drawable.welcomebackage);
Log.v(TAG, "loadMusic exit");
}
/*
* 函数介绍:绘画图片
* 图片宽320 hw.lcd.density=160 刚好满屏幕宽度
* 输入参数:canvas,绘画板
* 输出参数:无
* 返回值 :无
*/
private void drawPicture(Canvas canvas) {
Log.v(TAG, "drawPicture enter");
canvas.drawColor(Color.BLACK);
canvas.drawBitmap(m_bmpWelcomebackage, 0, 0, null);
Log.v(TAG, "drawPicture exit");
}
}
public void surfaceCreated(SurfaceHolder holder) {
Log.v(TAG, "surfaceCreated enter");
if (null != m_thread)
{
Log.v(TAG, "thread start");
if (!m_thread.getState().equals(Thread.State.NEW)) {
m_thread = new threadWelcome(this, holder);
}
m_thread.setSurfaceSupport(true);
m_thread.start();
}
Log.v(TAG, "surfaceCreated exit");
}
if (m_thread.getState().equals(State.NEW)) {
m_thread.start();
}
else
{
m_thread.run();
}
else
{
m_thread.run();
}
if (m_thread.getState().equals(State.NEW)) {
m_thread.start();
}