Android：通知中更新文本而不重置動畫

Question

我正在嘗試爲我的音樂應用實施通知。它包括播放/暫停和下一個按鈕，以及帶有選取框的TextView，以便歌曲標題滾動。當我嘗試更改播放/暫停按鈕圖標時，選取框文本將重置。

這是我的通知佈局文件：

<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="horizontal" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <ImageButton 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:src="@drawable/perm_group_audio_settings" 
     android:id="@+id/album_art" 
     android:background="#00000000" /> 

    <TextView 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_toRightOf="@+id/album_art" 
     android:ellipsize="marquee" 
     android:singleLine="true" 
     android:marqueeRepeatLimit="marquee_forever" 
     android:fadingEdge="horizontal" 
     android:focusable="true" 
     android:focusableInTouchMode="true" 
     android:id="@+id/song_name"> 
     <requestFocus/> 
    </TextView> 

    <LinearLayout 
     android:layout_width="wrap_content" 
     android:layout_height="match_parent" 
     android:layout_toRightOf="@+id/album_art" 
     android:layout_below="@+id/song_name" 
     android:orientation="horizontal" 
     android:gravity="right"> 
     <ImageButton 
      android:layout_width="wrap_content" 
      android:layout_height="match_parent" 
      android:layout_gravity="right" 
      android:id="@+id/player_stop" 
      android:background="#00000000" 
      android:src="@drawable/ic_media_stop"/> 

     <ImageButton 
      android:layout_width="wrap_content" 
      android:layout_height="match_parent" 
      android:id="@+id/player_pause" 
      android:background="#00000000" 
      android:src="@drawable/ic_media_pause"/> 

     <ImageButton 
      android:layout_width="wrap_content" 
      android:layout_height="match_parent" 
      android:id="@+id/player_next" 
      android:background="#00000000" 
      android:src="@drawable/ic_media_next"/> 
    </LinearLayout> 
</RelativeLayout> 

和通知類：

public class MediaPlayerNotification extends Notification { 
    private Context context; 

    private NotificationManager m_manager; 
    private NotificationCompat.Builder m_builder; 
    private RemoteViews m_view; 
    private Notification m_notification; 

    public MediaPlayerNotification(Context context) { 
     this.context = context; 

     m_builder = new NotificationCompat.Builder(context) 
       .setContentTitle(NOTIFICATION_TITLE) 
       .setSmallIcon(NOTIFICATION_ICON) 
       .setOngoing(true) 
       .setPriority(Notification.PRIORITY_MAX); 

     m_view = new RemoteViews(context.getPackageName(), R.layout.notification_player); 
     m_view.setImageViewResource(R.id.player_stop, ICON_STOP); 
     m_view.setImageViewResource(R.id.player_pause, ICON_PAUSE); 
     m_view.setImageViewResource(R.id.player_next, ICON_NEXT); 

     m_builder.setContent(m_view); 

     m_notification = m_builder.build(); 
     m_manager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE); 
     m_manager.notify(2, m_notification); 
    } 

    public void setPausePlayIcon(int iconId) { 
     m_view.setImageViewResource(R.id.player_pause, iconId); 
     m_manager.notify(2, m_notification); 
    } 
    public void setNowPlaying(String name) { 
     m_view.setTextViewText(R.id.song_name, name); 
     m_manager.notify(2, m_notification); 
    } 
} 

setPausePlayIcon()工程完全按照預期，改變圖標，但我TextView的重置它的位置。有沒有辦法改變圖標而不重置整個佈局？

Answer 1

試試這個：？

public void setPausePlayIcon(int iconId) { 
    m_view.setImageViewResource(R.id.player_pause, iconId); 
    m_builder.setContent(m_view); 
    m_manager.notify(2, m_builder.build()); 
}