很长一段时间以来，我一直在努力解决这个问题。我是android的新手。我完成了所有的功课，并完成了与我的问题相关的所有主题，但没有帮助。
我的应用代码基于月球着陆器并进行了修改。我有一个启动画面，然后显示一个菜单屏幕，启动我的主要活动。
在我的应用程序中，我有一个claSS游戏，我在main.xml中声明如下： -
我粘贴了xml文件的一部分： -
<?xml version="1.0" encoding="utf-8"?>
<HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/desert"
android:clipToPadding="true">
<com.example.android.Game
android:id="@+id/Game"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
我正在尝试从我的应用的MainActivity中扩充此活动，如下所示： -
与月球着陆器不同，我的主题是主要活动中的单独类。
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
mGame = (Game) findViewById(R.id.Game);
mGameThread = mGame.getThread();
我创建了一个线程，其定义在一个单独的文件中但是被声明为Game类的一部分..
我面临的问题是我的Game类的表面创建从未被调用过。所以线程永远不会运行。
下面我正在粘贴游戏类
public class Game extends SurfaceView implements SurfaceHolder.Callback{
private int mX;
private int mY;
private int mSpeedX;
private int mSpeedY;
private Bitmap mBitmap;
private GameThread thread;
public static Context mContext;
private TextView mStatusText;
private boolean mSurfaceExists;
public Game(Context context)
{
super(context);
SurfaceHolder holder = getHolder();
holder.addCallback(this);
// create thread only; it's started in surfaceCreated()
Log.w(this.getClass().getName(),"Before thread create");
thread = new GameThread(holder, context, new Handler() {
@Override
public void handleMessage(Message m) {
Log.w(this.getClass().getName(),"In Handle message");
mStatusText.setVisibility(m.getData().getInt("viz"));
mStatusText.setText(m.getData().getString("text"));
}
});
setFocusable(true); // make sure we get key events
}
public Game(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
SurfaceHolder holder = getHolder();
holder.addCallback(this);
// create thread only; it's started in surfaceCreated()
Log.w(this.getClass().getName(),"Before thread create");
thread = new GameThread(holder, context, new Handler() {
@Override
public void handleMessage(Message m) {
Log.w(this.getClass().getName(),"In Handle message");
mStatusText.setVisibility(m.getData().getInt("viz"));
mStatusText.setText(m.getData().getString("text"));
}
});
setFocusable(true); // make sure we get key events
}
public Game(Context context, AttributeSet attrs) {
super(context, attrs);
// register our interest in hearing about changes to our surface
SurfaceHolder holder = getHolder();
holder.addCallback(this);
// create thread only; it's started in surfaceCreated()
Log.w(this.getClass().getName(),"Before thread create");
thread = new GameThread(holder, context, new Handler() {
@Override
public void handleMessage(Message m) {
Log.w(this.getClass().getName(),"In Handle message");
mStatusText.setVisibility(m.getData().getInt("viz"));
mStatusText.setText(m.getData().getString("text"));
}
});
setFocusable(true); // make sure we get key events
}
/**
* Fetches the animation thread corresponding to this LunarView.
*
* @return the animation thread
*/
public GameThread getThread() {
return thread;
}
/**
* Standard window-focus override. Notice focus lost so we can pause on
* focus lost. e.g. user switches to take a call.
*/
@Override
public void onWindowFocusChanged(boolean hasWindowFocus) {
if (!hasWindowFocus) thread.pause();
}
/**
* Installs a pointer to the text view used for messages.
*/
public void setTextView(TextView textView) {
mStatusText = textView;
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
// TODO Auto-generated method stub
Log.w(this.getClass().getName(),":In surface changed");
thread.setSurfaceSize(width, height);
}
public void surfaceCreated(SurfaceHolder arg0) {
// TODO Auto-generated method stub
// start the thread here so that we don't busy-wait in run()
// waiting for the surface to be created
mSurfaceExists = false;
Log.w(this.getClass().getName(),"In Surface create");
Log.w(this.getClass().getName(),":Before starting thread at create");
thread.setRunning(true);
thread.start();
}
/*
* Callback invoked when the Surface has been destroyed and must no longer
* be touched. WARNING: after this method returns, the Surface/Canvas must
* never be touched again!
*/
public void surfaceDestroyed(SurfaceHolder arg0) {
// TODO Auto-generated method stub
// we have to tell thread to shut down & wait for it to finish, or else
// it might touch the Surface after we return and explode
boolean retry = true;
mSurfaceExists = false;
Log.w(this.getClass().getName(),"In Surface destroy");
thread.setRunning(false);
while (retry) {
try {
thread.join();
retry = false;
} catch (InterruptedException e) {
}
}
}