Android TV開發中所有的遙控器按鍵監聽及注意事項,新增home鍵監聽
阿新 • • 發佈:2019-02-13
簡單記錄下android 盒子開發遙控器的監聽 ,希望能幫到新入門的朋友們
不多說,直接貼程式碼
public class MainActivity extends Activity {
private String TAG="key";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_ENTER: //確定鍵enter
case KeyEvent.KEYCODE_DPAD_CENTER:
Log.d(TAG,"enter--->");
break;
case KeyEvent.KEYCODE_BACK: //返回鍵
Log.d(TAG,"back--->" );
return true; //這裡由於break會退出,所以我們自己要處理掉 不返回上一層
case KeyEvent.KEYCODE_SETTINGS: //設定鍵
Log.d(TAG,"setting--->");
break;
case KeyEvent.KEYCODE_DPAD_DOWN: //向下鍵
/* 實際開發中有時候會觸發兩次,所以要判斷一下按下時觸發 ,鬆開按鍵時不觸發
* exp:KeyEvent.ACTION_UP
*/
if (event.getAction() == KeyEvent.ACTION_DOWN){
Log.d(TAG,"down--->");
}
break;
case KeyEvent.KEYCODE_DPAD_UP: //向上鍵
Log.d(TAG,"up--->");
break;
case KeyEvent.KEYCODE_0: //數字鍵0
Log.d(TAG,"0--->");
break;
case KeyEvent.KEYCODE_DPAD_LEFT: //向左鍵
Log.d(TAG,"left--->");
break;
case KeyEvent.KEYCODE_DPAD_RIGHT: //向右鍵
Log.d(TAG,"right--->");
break;
case KeyEvent.KEYCODE_INFO: //info鍵
Log.d(TAG,"info--->");
break;
case KeyEvent.KEYCODE_PAGE_DOWN: //向上翻頁鍵
case KeyEvent.KEYCODE_MEDIA_NEXT:
Log.d(TAG,"page down--->");
break;
case KeyEvent.KEYCODE_PAGE_UP: //向下翻頁鍵
case KeyEvent.KEYCODE_MEDIA_PREVIOUS:
Log.d(TAG,"page up--->");
break;
case KeyEvent.KEYCODE_VOLUME_UP: //調大聲音鍵
Log.d(TAG,"voice up--->");
break;
case KeyEvent.KEYCODE_VOLUME_DOWN: //降低聲音鍵
Log.d(TAG,"voice down--->");
break;
case KeyEvent.KEYCODE_VOLUME_MUTE: //禁用聲音
Log.d(TAG,"voice mute--->");
break;
break;
default:
break;
}
return super.onKeyDown(keyCode, event);
}
}
效果如下:
home鍵的監聽要監聽廣播:
class HomeRecaiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)){
String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);
if(SYSTEM_DIALOG_REASON_HOME_KEY.equals(reason)){
Toast.makeText(MainActivity.this,"home鍵觸發",0).show();
Log.d(TAG, "home鍵觸發");
}
}
}
}
在oncreate()註冊廣播
public final String SYSTEM_DIALOG_REASON_KEY = "reason";
public final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";
/**
* 註冊廣播
*/
private void initReceiver() {
homeReceiver = new HomeRecaiver();
IntentFilter filter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
registerReceiver(homeReceiver, filter);
}
退出登出廣播
@Override
protected void onDestroy() {
super.onDestroy();
if(homeReceiver!=null){
unregisterReceiver(homeReceiver);
}
}