如何在Android TextureView中播放影片?
此示例演示瞭如何在Android TextureView中播放影片。
步驟1 −在Android Studio中建立新專案,轉到檔案⇒新建專案並填寫所有必需的詳細資訊以新建專案。
步驟2 −將以下程式碼新增到res/layout/activity_main.xml。
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:padding="8dp" tools:context=".MainActivity"> <TextureView android:id="@+id/textureView" android:layout_width="match_parent" android:layout_height="match_parent"/> </LinearLayout>
步驟3 −建立資產資料夾並將影片複製貼上到資產資料夾中。
步驟4 −將以下程式碼新增到src/MainActivity.java
import androidx.appcompat.app.AppCompatActivity;
import android.content.res.AssetFileDescriptor;
import android.graphics.SurfaceTexture;
import android.media.MediaPlayer;
import android.os.Build;
import android.os.Bundle;
import android.view.Surface;
import android.view.TextureView;
import java.io.IOException;
public class MainActivity extends AppCompatActivity implements TextureView.SurfaceTextureListener, MediaPlayer.OnVideoSizeChangedListener {
TextureView textureView;
private MediaPlayer mediaPlayer;
AssetFileDescriptor fileDescriptor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textureView = findViewById(R.id.textureView);
textureView.setSurfaceTextureListener(this);
mediaPlayer = new MediaPlayer();
try {
fileDescriptor = getAssets().openFd("videoplayback.mp4");
}
catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int width, int height) {
Surface surface = new Surface(surfaceTexture);
try {
mediaPlayer.setSurface(surface);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
mediaPlayer.setDataSource(fileDescriptor);
mediaPlayer.prepareAsync();
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mediaPlayer.start();
}
});
}
}
catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
return false;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
}
@Override
public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
}
}步驟5 −將以下程式碼新增到androidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
讓我們嘗試執行您的應用程式。我假設您已經將您的實際Android移動裝置與您的計算機連線。要從Android Studio執行應用程式,請開啟您的一個專案活動檔案,然後單擊工具欄中的執行
圖示。選擇您的移動裝置作為選項,然後檢視將顯示您預設螢幕的移動裝置−

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