首先将cocos2d/cocos/platform/android/src/org/cocos2dx/lib下的Cocos2dxGLSurfaceView.java里的
public boolean onKeyDown(final int pKeyCode,final KeyEvent pKeyEvent) 函数修改一下,改成如下样式,让KeyEvent.KEYCODE_BACK时直接返回false,防止其阻断我们对返回键的监听。
public boolean onKeyDown(final int pKeyCode,final KeyEvent pKeyEvent) { switch (pKeyCode) { case KeyEvent.KEYCODE_BACK: return false; // Cocos2dxVideoHelper.mVideoHandler.sendEmptyMessage(Cocos2dxVideoHelper.KeyEventBack); case KeyEvent.KEYCODE_MENU: case KeyEvent.KEYCODE_DPAD_LEFT: case KeyEvent.KEYCODE_DPAD_RIGHT: case KeyEvent.KEYCODE_DPAD_UP: case KeyEvent.KEYCODE_DPAD_DOWN: case KeyEvent.KEYCODE_ENTER: case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE: case KeyEvent.KEYCODE_DPAD_CENTER: this.queueEvent(new Runnable() { @Override public void run() { Cocos2dxGLSurfaceView.this.mCocos2dxRenderer.handleKeyDown(pKeyCode); } }); return true; default: return super.onKeyDown(pKeyCode,pKeyEvent); } }
之后在跟根目录的src/org.cocos2dx.cpp/AppActivity.java里面的主函数里添加如下代码即可
private long mkeyTime = 0; public boolean onKeyDown(int keyCode,KeyEvent event) { //二次返回退出 if (keyCode == KeyEvent.KEYCODE_BACK) { if ((System.currentTimeMillis() - mkeyTime) > 2000) { mkeyTime = System.currentTimeMillis(); Toast.makeText(this,"请再按一次退出游戏",Toast.LENGTH_LONG).show(); } else { finish(); System.exit(0); } return false; } return super.onKeyDown(keyCode,event); }
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