在Android中，避免Letterbox（黑边）内容变形的关键是确保视频播放器的尺寸与视频内容的尺寸相匹配。以下是一些建议来实现这一目标：
使用FitVideoView或TextureView：这些视图可以自动调整大小以适应视频内容，从而避免Letterbox变形。
设置视频的缩放模式：在加载视频时，设置视频的缩放模式为fitXY或centerCrop。这将确保视频填充整个播放区域，同时保持其宽高比。
VideoView videoView = findViewById(R.id.videoView); videoView.setVideoURI(Uri.parse("your_video_url")); videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() { @Override public void onPrepared(MediaPlayer mp) { mp.setVideoScalingMode(MediaPlayer.VIDEO_SCALING_MODE_FIT_XY); // 或者使用 centerCrop videoView.start(); } }); AspectRatioFrameLayout：将视频播放器放置在AspectRatioFrameLayout中，并设置其宽高比。这将确保视频播放器始终保持所需的宽高比，同时填充整个屏幕。<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent"> <androidx.constraintlayout.widget.AspectRatioFrameLayout android:id="@+id/video_container" android:layout_width="match_parent" android:layout_height="match_parent" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="0.5" app:layout_constraintHorizontal_bias="0.5"> <VideoView android:id="@+id/videoView" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </androidx.constraintlayout.widget.AspectRatioFrameLayout> </androidx.constraintlayout.widget.ConstraintLayout> public class MainActivity extends AppCompatActivity { private VideoView videoView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); videoView = findViewById(R.id.videoView); videoView.setVideoURI(Uri.parse("your_video_url")); videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() { @Override public void onPrepared(MediaPlayer mp) { updateVideoSize(); videoView.start(); } }); } @Override protected void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); updateVideoSize(); } private void updateVideoSize() { int screenWidth = getResources().getDisplayMetrics().widthPixels; int screenHeight = getResources().getDisplayMetrics().heightPixels; float videoAspectRatio = (float) videoView.getDuration() / videoView.getVideoWidth(); int videoHeight = (int) (screenWidth / videoAspectRatio); ViewGroup.LayoutParams layoutParams = videoView.getLayoutParams(); layoutParams.width = screenWidth; layoutParams.height = videoHeight; videoView.setLayoutParams(layoutParams); } } 遵循这些建议，您应该能够避免在Android应用程序中使用Letterbox时出现内容变形的问题。
