cocos2dx ＋ android点击返回键两下退出游戏实现

1，修改org/cocos2dx/lib/Cocos2dxGLSurfaceView.java下面

@Override
public boolean onKeyDown(final int pKeyCode, final KeyEvent pKeyEvent) {
switch (pKeyCode) {
case KeyEvent.KEYCODE_BACK:

case KeyEvent.KEYCODE_MENU:
this.queueEvent(new Runnable() {
@Override
public void run() {
Cocos2dxGLSurfaceView.this.mCocos2dxRenderer.handleKeyDown(pKeyCode);
}
});
return true;
default:
return super.onKeyDown(pKeyCode, pKeyEvent);
}
}为：
@Override
public boolean onKeyDown(final int pKeyCode, final KeyEvent pKeyEvent) {
switch (pKeyCode) {
case KeyEvent.KEYCODE_BACK:
return false;
case KeyEvent.KEYCODE_MENU:
this.queueEvent(new Runnable() {
@Override
public void run() {
Cocos2dxGLSurfaceView.this.mCocos2dxRenderer.handleKeyDown(pKeyCode);
}
});
return true;
default:
return super.onKeyDown(pKeyCode, pKeyEvent);
}
}按键KeyEvent.KEYCODE_BACK被监听了，只要在这里不作处理即可（return false）
2，添加代码

//
private long exitTime = 0;

@Override
public boolean onKeyDown(int keyCode, KeyEvent event){
Log.e("<<<onKeyDown", "<<<onKeyDown");
if(keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN){
if(System.currentTimeMillis() - exitTime > 2000){
Toast.makeText(getApplicationContext(), "再按一次退出程序", Toast.LENGTH_SHORT).show();
exitTime = System.currentTimeMillis();
}else{
finish();
System.exit(0);
}
return true;
}
return super.onKeyDown(keyCode, event);
}