Die Anleitung zu Android VideoView
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VideoView ist ein verfügbarer anpassbares Teil vom Android. Es ist die Konnektion zwischen MediaPlayer und SuffaceView, damit Sie ein Video einfacher machen können
Bei der Benutzung von VideoView können Sie MediaController benutzen. Das ist ein verfügbarer Teil im Android um media zu steuern (wie starten, pause, stop, spulen,..)
Wenn Sie VideoView und MediaController in einem FrameLayout legen, können Sie eine Interface wie folgend erhalten
Und jetzt können wir ein Beispiel über VideoView und MediaController sehen, dessen Postion auf die Oberfläche des Video liegt. Sie können zuerst das Bild des Beispiel, das wir später machen, unten sehen
Erstellen Sie ein Projekt mit dem Name von AndroidVideoView:
- File > New > New Project > Empty Activity
- Name: AndroidVideoView
- Package name: org.o7planning.androidvideoview
- Language: Java
Erstellen Sie einen Ordner raw um die File video zu enthalten
Die File video mp4 in dem Ordner raw:kopieren und aufkleben
Wenn Sie ein Video aus ein URL spielen möchten, brauchen Sie erlauben, dass die Anwendung das Netwerk zu benutzen, und dann die Code XML nach AndroidManifest.xml hinzufügen:
<uses-permission android:name="android.permission.INTERNET"/>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.o7planning.androidvideoview">
<uses-permission android:name="android.permission.INTERNET"/>
<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>
Design the Interface:
Wenn Sie sich für die Design-Schritten zur Anwendungsinterface interessieren, bitte sehen Sie den Anhang am Ende des Artikel.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<FrameLayout
android:id="@+id/frameLayout"
android:layout_width="0dp"
android:layout_height="250dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<VideoView
android:id="@+id/videoView"
android:layout_width="wrap_content"
android:layout_height="match_parent" />
</FrameLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:orientation="horizontal"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/frameLayout">
<Space
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" />
<Button
android:id="@+id/button_raw"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:text="Raw" />
<Button
android:id="@+id/button_local"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Local" />
<Button
android:id="@+id/button_url"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:text="URL" />
<Space
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package org.o7planning.androidvideoview;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnPreparedListener;
import android.view.View;
import android.widget.Button;
import android.widget.MediaController;
import android.widget.VideoView;
public class MainActivity extends AppCompatActivity {
private VideoView videoView;
private int position = 0;
private MediaController mediaController;
private Button buttonRaw;
private Button buttonLocal;
private Button buttonURL;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.videoView = (VideoView) findViewById(R.id.videoView);
this.buttonRaw = (Button) findViewById(R.id.button_raw);
this.buttonLocal = (Button) findViewById(R.id.button_local );
this.buttonURL = (Button) findViewById(R.id.button_url);
// Set the media controller buttons
if (this.mediaController == null) {
this.mediaController = new MediaController(MainActivity.this);
// Set the videoView that acts as the anchor for the MediaController.
this.mediaController.setAnchorView(videoView);
// Set MediaController for VideoView
this.videoView.setMediaController(mediaController);
}
// When the video file ready for playback.
this.videoView.setOnPreparedListener(new OnPreparedListener() {
public void onPrepared(MediaPlayer mediaPlayer) {
videoView.seekTo(position);
if (position == 0) {
videoView.start();
}
// When video Screen change size.
mediaPlayer.setOnVideoSizeChangedListener(new MediaPlayer.OnVideoSizeChangedListener() {
@Override
public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
// Re-Set the videoView that acts as the anchor for the MediaController
mediaController.setAnchorView(videoView);
}
});
}
});
this.buttonRaw.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// "myvideo.mp4" in directory "raw".
String resName = VideoViewUtils.RAW_VIDEO_SAMPLE;
VideoViewUtils.playRawVideo(MainActivity.this, videoView, resName);
}
});
this.buttonLocal.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String localPath = VideoViewUtils.LOCAL_VIDEO_SAMPLE;
VideoViewUtils.playLocalVideo(MainActivity.this, videoView, localPath);
}
});
this.buttonURL.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String videoURL = VideoViewUtils.URL_VIDEO_SAMPLE;
VideoViewUtils.playURLVideo(MainActivity.this, videoView, videoURL);
}
});
}
// When you change direction of phone, this method will be called.
// It store the state of video (Current position)
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
// Store current position.
savedInstanceState.putInt("CurrentPosition", videoView.getCurrentPosition());
videoView.pause();
}
// After rotating the phone. This method is called.
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
// Get saved position.
position = savedInstanceState.getInt("CurrentPosition");
videoView.seekTo(position);
}
}
VideoViewUtils.java
package org.o7planning.androidvideoview;
import android.content.Context;
import android.net.Uri;
import android.util.Log;
import android.widget.Toast;
import android.widget.VideoView;
public class VideoViewUtils {
// "myvideo.mp4" in directory "raw".
public static final String RAW_VIDEO_SAMPLE = "myvideo";
public static final String LOCAL_VIDEO_SAMPLE ="/storage/emulated/0/DCIM/Camera/VID_20180212_195520.mp4";
public static final String URL_VIDEO_SAMPLE = "https://ex1.o7planning.com/_testdatas_/mov_bbb.mp4";
public static final String LOG_TAG= "AndroidVideoView";
// Play a video in directory RAW.
// Video name = "myvideo.mp4" ==> resName = "myvideo".
public static void playRawVideo(Context context, VideoView videoView, String resName) {
try {
// ID of video file.
int id = VideoViewUtils.getRawResIdByName( context, resName);
Uri uri = Uri.parse("android.resource://" + context.getPackageName() + "/" + id);
Log.i(LOG_TAG, "Video URI: "+ uri);
videoView.setVideoURI(uri);
videoView.requestFocus();
} catch (Exception e) {
Log.e(LOG_TAG, "Error Play Raw Video: "+e.getMessage());
Toast.makeText(context,"Error Play Raw Video: "+ e.getMessage(),Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
// @localPath = "/storage/emulated/0/DCIM/Camera/VID_20180212_195520.mp4"; (For example).
public static void playLocalVideo(Context context, VideoView videoView, String localPath) {
try {
} catch(Exception e) {
Log.e(LOG_TAG, "Error Play Local Video: "+ e.getMessage());
Toast.makeText(context,"Error Play Local Video: "+ e.getMessage(),Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
// String videoURL = "https://ex1.o7planning.com/_testdatas_/mov_bbb.mp4";
// String videoURL = "https://www.radiantmediaplayer.com/media/bbb-360p.mp4";
public static void playURLVideo(Context context, VideoView videoView, String videoURL) {
try {
Log.i(LOG_TAG, "Video URL: "+ videoURL);
Uri uri= Uri.parse( videoURL );
videoView.setVideoURI(uri);
videoView.requestFocus();
} catch(Exception e) {
Log.e(LOG_TAG, "Error Play URL Video: "+ e.getMessage());
Toast.makeText(context,"Error Play URL Video: "+ e.getMessage(),Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
// Find ID corresponding to the name of the resource (in the directory RAW).
public static int getRawResIdByName(Context context, String resName) {
String pkgName = context.getPackageName();
// Return 0 if not found.
int resID = context.getResources().getIdentifier(resName, "raw", pkgName);
Log.i(LOG_TAG, "Res Name: " + resName + "==> Res ID = " + resID);
return resID;
}
}
Einige Beachtungen mit der Kode
Hier ist das Bild wenn Sie setAnchorView() benutzen um MediaController in VideoView:zu ankern
Die Interface der Anwendung entwerfen:
ID, Text für die Komponeneten in die Interface festlegen:
