当搜索栏更新时，Marquee不起作用
我制作了一个音乐播放器，并为歌曲和艺术家名称实施了一个选框。但是一旦搜索栏更新，文本视图就会回到原始位置。因此，通过这种方式，可以看到文本的一种来回运动。
这是我的XML代码：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/mainFullPlayerContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.musicplayer.integrated.sanket.music.MainFullPlayer"
android:background="@color/defaultBackground">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/relativeLayout"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true">
<ImageView
android:id="@+id/imageView_full_player_more"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_marginTop="20dp"
android:layout_marginRight="15dp"
app:srcCompat="@drawable/icon_more" />
</RelativeLayout>
<ImageView
android:id="@+id/imageView_full_player_album_art"
android:layout_width="300dp"
android:layout_height="300dp"
app:srcCompat="@drawable/default_album_art"
android:layout_marginTop="29dp"
android:layout_below="@+id/relativeLayout"
android:layout_centerHorizontal="true" />
<SeekBar
android:id="@+id/seekBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:progressTint="@color/defaultTextColor"
android:thumbTint="@color/defaultTextColor"
android:layout_above="@+id/imageView_full_player_play"
android:layout_marginBottom="37dp" />
<ImageView
android:id="@+id/imageView_full_player_play"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="31dp"
app:srcCompat="@drawable/icon_play_small" />
<ImageView
android:id="@+id/imageView_full_player_next"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/imageView_full_player_play"
android:layout_marginStart="39dp"
android:layout_toEndOf="@+id/imageView_full_player_play"
app:srcCompat="@drawable/icon_fast_next_small" />
<ImageView
android:id="@+id/imageView_full_player_prev"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/imageView_full_player_play"
android:layout_marginEnd="38dp"
android:layout_toStartOf="@+id/imageView_full_player_play"
app:srcCompat="@drawable/icon_rewind_prev_small" />
<TextView
android:id="@+id/textView_full_player_song"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignEnd="@+id/imageView_full_player_album_art"
android:layout_alignStart="@+id/imageView_full_player_album_art"
android:layout_below="@+id/imageView_full_player_album_art"
android:layout_marginTop="12dp"
android:ellipsize="marquee"
android:focusable="true"
android:marqueeRepeatLimit="marquee_forever"
android:scrollHorizontally="true"
android:singleLine="true"
android:text="Song Name"
android:textAlignment="center"
android:textColor="@color/defaultTextColor"
android:textSize="18sp" />
<TextView
android:id="@+id/textView_current_time"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="0:00"
android:textColor="@color/defaultTextColor"
android:textSize="12sp"
android:layout_marginBottom="18dp"
android:layout_above="@+id/imageView_full_player_prev"
android:layout_alignStart="@+id/textView_full_player_artist" />
<TextView
android:id="@+id/textView_total_length"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="5:00"
android:textSize="12sp"
android:textColor="@color/defaultTextColor"
android:layout_alignBaseline="@+id/textView_current_time"
android:layout_alignBottom="@+id/textView_current_time"
android:layout_alignEnd="@+id/textView_full_player_artist" />
<TextView
android:id="@+id/textView_full_player_artist"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignEnd="@+id/textView_full_player_song"
android:layout_alignStart="@+id/textView_full_player_song"
android:layout_below="@+id/textView_full_player_song"
android:layout_marginTop="12dp"
android:text="Artist"
android:textAlignment="center"
android:textColor="@color/defaultTextColor"
android:textSize="15sp"
android:ellipsize="marquee"
android:singleLine="true"
android:marqueeRepeatLimit="marquee_forever"
android:focusable="true"
android:scrollHorizontally="true"
/>
</RelativeLayout>
这是我的Java代码：
public class MainFullPlayer extends AppCompatActivity {
private static RelativeLayout fullPlayer;
private static ImageView fullPlayer_play , fullPlayer_next ,
fullPlayer_prev,fullPlayer_album;
private static TextView fullPlayer_song , fullPlayer_artist ,
fullPlayer_currentTime , fullPlayer_maxTime;
private static SeekBar seekBar;
private Songs song;
private static Handler progressHandler;
private static Runnable progressRunnable;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_full_player);
fullPlayer = (RelativeLayout)findViewById(R.id.mainFullPlayerContainer);
fullPlayer_play = (ImageView)findViewById(R.id.imageView_full_player_play);
fullPlayer_next = (ImageView)findViewById(R.id.imageView_full_player_next);
fullPlayer_prev = (ImageView)findViewById(R.id.imageView_full_player_prev);
fullPlayer_album = (ImageView)findViewById(R.id.imageView_full_player_album_art);
fullPlayer_song = (TextView)findViewById(R.id.textView_full_player_song);
fullPlayer_artist = (TextView)findViewById(R.id.textView_full_player_artist);
fullPlayer_currentTime = (TextView)findViewById(R.id.textView_current_time);
fullPlayer_maxTime = (TextView)findViewById(R.id.textView_total_length);
fullPlayer_maxTime.setText(MusicPlayback.getTime(MusicPlayback.mediaPlayer.getDuration()));
seekBar = (SeekBar)findViewById(R.id.seekBar);
song = MusicPlayback.allTracks.get(MusicPlayback.songPosition);
fullPlayer_song.setSelected(true);
fullPlayer_artist.setSelected(true);
fullPlayer_song.setText(song.getSongName());
fullPlayer_artist.setText(song.getArtist());
if(MusicPlayback.getPlayingStatus()){
fullPlayer_play.setImageResource(R.drawable.icon_pause_small);
}
else
{
fullPlayer_play.setImageResource(R.drawable.icon_play_small);
}
if(song.getAlbumArt()!= null){
fullPlayer_album.setImageURI(Uri.parse(song.getAlbumArt()));
fullPlayer.setBackground(FragmentAllTracks.d);
}
else{
fullPlayer_album.setImageResource(R.drawable.default_album_art);
fullPlayer.setBackgroundColor(Color.argb(255, 48, 48, 48));
}
seekBar.setMax(MusicPlayback.mediaPlayer.getDuration());
progressHandler = new Handler();
progressRunnable = new Runnable() {
@Override
public void run() {
seekBar.setProgress(MusicPlayback.mediaPlayer.getCurrentPosition());
fullPlayer_currentTime.setText(MusicPlayback.getTime(MusicPlayback.mediaPlayer.getCurrentPosition()));
progressHandler.postDelayed(progressRunnable,100);
}
};
progressHandler.postDelayed(progressRunnable,100);
}
@Override
public void onBackPressed() {
super.onBackPressed();
this.overridePendingTransition(R.anim.left_exit_translate,R.anim.right_exit_translate);
}
}
结果如下：
3 个答案:
答案 0 :(得分：0)
我认为这是因为焦点。请设置像这样的文本视图
<TextView
android:id="@+id/textView_full_player_song"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignEnd="@+id/imageView_full_player_album_art"
android:layout_alignStart="@+id/imageView_full_player_album_art"
android:layout_below="@+id/imageView_full_player_album_art"
android:layout_marginTop="12dp"
android:singleLine="true"
android:ellipsize="marquee"
android:marqueeRepeatLimit ="marquee_forever"
android:focusable="true"
android:focusableInTouchMode="true"
android:scrollHorizontally="true"
android:text="Song Name"
android:textAlignment="center"
android:textColor="@color/defaultTextColor"
android:textSize="18sp" />
添加你的TextView，
android:focusable="true"
android:focusableInTouchMode="true"
答案 1 :(得分：0)
尝试使用此MarqueeTextView类，它会自动为TextView设置固定大小，以便不会重新测量（导致重新启动滚动动画的原因）：
public class MarqueeTextView extends AppCompatTextView implements View.OnLayoutChangeListener {
public MarqueeTextView(Context context) {
this(context, null);
}
public MarqueeTextView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public MarqueeTextView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
setSingleLine();
setEllipsize(TextUtils.TruncateAt.MARQUEE);
setMarqueeRepeatLimit(-1);
setSelected(true);
addOnLayoutChangeListener(this);
}
@Override
public boolean isFocused() {
return true;
}
@Override
public void onWindowFocusChanged(boolean hasWindowFocus) {
if (hasWindowFocus) super.onWindowFocusChanged(hasWindowFocus);
}
@Override
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
if (focused) super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
@Override
public void onLayoutChange(View v, int left, int top, int right, int bottom,
int oldLeft, int oldTop, int oldRight, int oldBottom) {
ViewGroup.LayoutParams layoutParams = getLayoutParams();
layoutParams.height = bottom - top;
layoutParams.width = right - left;
removeOnLayoutChangeListener(this);
setLayoutParams(layoutParams);
}
}
答案 2 :(得分：0)
我有同样的问题。发生这种情况的原因是在runnable中的这一行：
fullPlayer_currentTime.setText(MusicPlayback.getTime(MusicPlayback.mediaPlayer.getCurrentPosition()));
我在这里找到了答案：https://stackoverflow.com/a/13841982/10334697。
您必须为TextView设置固定大小。
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