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[英]How to capture press and hold (long press) of the ACTION_MEDIA_BUTTON
[英]Android - How to detect action media button long press
我正在開發一個檢測耳機按鈕單擊和雙擊的應用程序(下面的代碼)。 單擊和雙擊工作正常,但長按不起作用。 下面的代碼在一個擴展 BroadcastReceiver 的類中。 我該如何解決這個問題? 非常感謝你。
@Override
public void onReceive(Context context, Intent intent)
{
context1=context;
intent1=intent;
String intentAction=intent.getAction();
if (!Intent.ACTION_MEDIA_BUTTON.equalsIgnoreCase(intentAction))
{
return;
}
KeyEvent event = (KeyEvent) intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
if (event == null) {
return;
}
int action = event.getAction();
if (action == KeyEvent.ACTION_DOWN)
{
// do something
d++;
Handler handler = new Handler();
Runnable r = new Runnable()
{
@Override
public void run()
{
// single click *******************************
if (d == 1)
{
Toast.makeText(context1, "single click!", Toast.LENGTH_SHORT).show();
}
// double click *********************************
if (d == 2)
{
Toast.makeText(context1, "Double click!!", Toast.LENGTH_SHORT).show();
}
d = 0;
}
};
if (d == 1)
{
handler.postDelayed(r, 500);
}
}
/**
* for long click
*/
if (action == KeyEvent.ACTION_UP)
{
if (SystemClock.uptimeMillis() - event.getDownTime() > 2000)
{
Toast.makeText(context, "Long click!", Toast.LENGTH_SHORT).show();
}
}
abortBroadcast();
}
更新
這是 Main.class
public class Main extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener
{
private static final String TAG = "MainActivity";
PreferenceFragment pf;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FragmentManager fragmentManager= getFragmentManager();
SingoloClick singoloClick= new SingoloClick();
FragmentTransaction ft=fragmentManager.beginTransaction();
ft.replace(R.id.content_frame, singoloClick);
ft.commit();
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
IntentFilter filter = new IntentFilter(Intent.ACTION_MEDIA_BUTTON);//"android.intent.action.MEDIA_BUTTON"
MediaButtonIntentReceiver r = new MediaButtonIntentReceiver();
filter.setPriority(999); //this line sets receiver priority
registerReceiver(r, filter);
((AudioManager)getSystemService(AUDIO_SERVICE)).registerMediaButtonEventReceiver(new ComponentName(getPackageName(), MediaButtonIntentReceiver.class.getName()));
}
@Override public void onResume()
{
super.onResume();
}
@Override
public void onBackPressed()
{
moveTaskToBack(true);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START))
{
drawer.closeDrawer(GravityCompat.START);
}
/*else
{
super.onBackPressed();
}*/
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings)
{
return true;
}
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_singoloClick)
{
setTitle(""+getResources().getString(R.string.singoloClick));
FragmentManager fragmentManager= getFragmentManager();
SingoloClick singoloClick= new SingoloClick();
FragmentTransaction ft=fragmentManager.beginTransaction();
ft.replace(R.id.content_frame, singoloClick);
ft.commit();
} else if (id == R.id.nav_doppioClick)
{
setTitle(""+getResources().getString(R.string.doppioClick));
FragmentManager fragmentManager= getFragmentManager();
DoppioClick doppioClick= new DoppioClick();
FragmentTransaction ft=fragmentManager.beginTransaction();
ft.replace(R.id.content_frame, doppioClick);
ft.commit();
} else if (id == R.id.nav_lungoClick)
{
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
@Override
protected void onDestroy()
{
super.onDestroy();
android.os.Process.killProcess(android.os.Process.myPid());*/
}
@Override public void onPause()
{
super.onPause();
}
}
這是 Manifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example">
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name"
android:supportsRtl="true" android:theme="@style/AppTheme">
<activity android:name=".Main" android:label="@string/app_name" android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".MediaButtonIntentReceiver">
<intent-filter android:priority="999">
<action android:name="android.intent.action.MEDIA_BUTTON" />
</intent-filter>
<intent-filter android:priority="0">
<action android:name="android.intent.action.VOICE_COMMAND" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
</application>
嘗試使用另一個關鍵事件 KeyEvent.OTHER ... 我在文檔中發現的內容:
/**
* This flag is set for the first key repeat that occurs after the
* long press timeout.
*/
public static final int FLAG_LONG_PRESS = 0x80;
更新:另一種解決方案,用於在按下按鈕時捕獲時間。
final Timer timer = new Timer();
button.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View arg0, MotionEvent arg1) {
switch ( arg1.getAction() ) {
case MotionEvent.ACTION_DOWN:
//start timer
timer.schedule(new TimerTask() {
@Override
public void run() {
// invoke intent
}
}, 5000); //time out 5s
return true;
case MotionEvent.ACTION_UP:
//stop timer
timer.cancel();
return true;
}
return false;
}
});
更新 2:
看起來您的問題是您在 onTouchEvent 中處理觸摸事件的方式。 該方法 ACTION_UP - 不起作用! 如果要處理觸摸事件,則需要從 onTouchEvent 返回 true。 因此,如果您收到 ACTION_DOWN 並從 onTouchEvent 返回 false,系統將不會再向您發送任何相關的觸摸事件,直到下一個 ACTION_DOWN 事件發生。
如果你想接收除 ACTION_DOWN 之外的任何觸摸事件,你需要從 onTouchEvent 返回 true,那個按鈕。 但你不能這樣做,所以需要考慮另一種解決方案。
更新 3
正如我所說,需要創建其他解決方案,因為 KEY_ACTION_UP 不起作用。 也許也試試這個解決方案。
對於長按一個鍵的手柄:
@Override
public boolean onKeyLongPress(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
}
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