VideoView之视频播放

运行截图

AndroidMenifest.xml清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="csdn.example.com.notification">

    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <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">
        <provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="csdn.example.com.notification.CameraAlbumTest"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_paths" />
        </provider>

        <activity android:name=".PlayVideoTest.Main4Activity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

</manifest>

MainActivity.java

package csdn.example.com.notification.PlayVideoTest;

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.VideoView;

import java.io.File;

import csdn.example.com.notification.R;

public class Main4Activity extends AppCompatActivity implements View.OnClickListener {

    private VideoView videoView;
    Button start, pause, replay;
    TextView time;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main4);
        videoView = (VideoView) findViewById(R.id.video_view);
        start = (Button) findViewById(R.id.start);
        pause = (Button) findViewById(R.id.pause);
        replay = (Button) findViewById(R.id.replay);
        time = (TextView) findViewById(R.id.time);
        start.setOnClickListener(this);
        pause.setOnClickListener(this);
        replay.setOnClickListener(this);

        /**
         * 运行时权限处理 ,动态申请WITRE_EXTERNAL_STORAGE权限,由于会在SD卡中放置一个视频文件,程序为了播放这个视频文件
         * 才必须拥有访问SD卡的权限才行
         */
        if (ContextCompat.checkSelfPermission(Main4Activity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) !=
                PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(Main4Activity.this, new String[]{
                    Manifest.permission.WRITE_EXTERNAL_STORAGE
            }, 1);
        } else {
            initVideoPath();
        }
    }

    /**
     * 设置视频路径,会在SD卡的根目录上放置movie.mp4 的视频文件
     */
    private void initVideoPath() {
        File file = new File(Environment.getExternalStorageDirectory(), "movie.mp4");
        videoView.setVideoPath(file.getPath());//指定视频文件路径
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode) {
            case 1:
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    initVideoPath();
                } else {
                    Toast.makeText(this, "拒绝将无法使用程序", Toast.LENGTH_SHORT).show();
                    finish();
                }
                break;
            default:
        }
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {

            case R.id.start:
                if (!videoView.isPlaying()) {
                    videoView.start(); //开始播放
                }
                break;
            case R.id.pause:
                if (videoView.isPlaying()) {
                    videoView.pause(); //暂停播放
                }
                break;
            case R.id.replay:
                if (videoView.isPlaying()) {
                    videoView.resume(); //重新播放
                }
                break;
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (videoView != null) {
            videoView.suspend();//将资源释放掉
        }
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <Button
            android:id="@+id/start"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="播放" />

        <Button
            android:id="@+id/pause"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="暂停" />

        <Button
            android:id="@+id/replay"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="重复" />
    </LinearLayout>

    <VideoView
        android:id="@+id/video_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />


</LinearLayout>