最近涉及到一個需要播放視頻的界面,內容不多,直接上代碼。
先看佈局文件act_video_play,裏面有一個VideoView組件:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ff000000"
android:gravity="center" >
<VideoView
android:id="@+id/videoView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" />
</LinearLayout>
在來看activity代碼:
package com.example.playmp4;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnKeyListener;
import android.content.Intent;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.DisplayMetrics;
import android.view.KeyEvent;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.MediaController;
import android.widget.VideoView;
public class PlayMP4 extends Activity {
private VideoView videoView;
private int play_progress;
private String video_url;
private String progress_Title;
private Dialog progress;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.act_video_play);
Intent intent = getIntent();
video_url = intent.getStringExtra("video_url");
progress_Title = intent.getStringExtra("title");
// for test
video_url = Environment.getExternalStorageDirectory().toString()
+ "/dcim/100MEDIA/VIDEO0002.mp4";
if (this.progress_Title == null)
this.progress_Title = "Loading";
play_progress = intent.getIntExtra("play_progress", 0);
videoView = (VideoView) findViewById(R.id.videoView);
progress = ProgressDialog.show(this, "loading", progress_Title);
progress.setOnKeyListener(new OnKeyListener() {
@Override
public boolean onKey(DialogInterface dialog, int keyCode,
KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
dialog.dismiss();
PlayMP4.this.finish();
}
return false;
}
});
videoView.setVideoURI(Uri.parse(video_url));
MediaController controller = new MediaController(this);
videoView.setMediaController(controller);
videoView.requestFocus();
videoView.setLayoutParams(new LinearLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
videoView.setOnPreparedListener(new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
if (progress != null)
progress.dismiss();
}
});
videoView.setOnCompletionListener(new OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
if (progress != null)
progress.dismiss();
}
});
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
Intent intent = new Intent();
intent.putExtra("play_progress", videoView.getCurrentPosition());
setResult(RESULT_OK, intent);
}
return super.onKeyDown(keyCode, event);
}
@Override
protected void onResume() {
super.onResume();
videoView.seekTo(play_progress);
videoView.start();
}
@Override
protected void onStop() {
super.onStop();
if (videoView != null) {
videoView.pause();
play_progress = videoView.getCurrentPosition();
}
if (progress != null) {
progress.dismiss();
}
}
}
video_url這個就是播放的地址,可以是本地文件地址,也可以是網絡上的鏈接。
play_progress爲播放進度。當這個播放界面關閉後,會返回該值給上一級界面。下次再播放同一個視頻時,就可以直接從上一次停止的位置播放。如何處理記錄播放位置,這個就根據應用情況,請自行設計,這裏就不多囉嗦了。
這個就不附工程了,代碼如上。