Android 中使用MediaRecorder進行錄影詳解(視訊錄製)
阿新 • • 發佈:2019-02-06
在這裡給出自己的一個測試DEMO,裡面註釋很詳細。簡單的視訊錄製功能.
package com.demo;
import java.io.IOException;
import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.graphics.PixelFormat;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
/**
* class name:TestBasicVideo<BR>
* class description:一個簡單的錄製視訊例子<BR>
* PS:實現基本的錄製儲存檔案 <BR>
*
* @version 1.00 2011/09/21
* @author CODYY)peijiangping
*/
public class TestBasicVideo extends Activity implements SurfaceHolder.Callback {
private Button start;// 開始錄製按鈕
private Button stop;// 停止錄製按鈕
private MediaRecorder mediarecorder;// 錄製視訊的類
private SurfaceView surfaceview;// 顯示視訊的控制元件
// 用來顯示視訊的一個介面,我靠不用還不行,也就是說用mediarecorder錄製視訊還得給個介面看
// 想偷偷錄視訊的同學可以考慮別的辦法。。嗯需要實現這個介面的Callback介面
private SurfaceHolder surfaceHolder;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉標題欄
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);// 設定全屏
// 設定橫屏顯示
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
// 選擇支援半透明模式,在有surfaceview的activity中使用。
getWindow().setFormat(PixelFormat.TRANSLUCENT);
setContentView(R.layout.main);
init();
}
private void init() {
start = (Button) this.findViewById(R.id.start);
stop = (Button) this.findViewById(R.id.stop);
start.setOnClickListener(new TestVideoListener());
stop.setOnClickListener(new TestVideoListener());
surfaceview = (SurfaceView) this.findViewById(R.id.surfaceview);
SurfaceHolder holder = surfaceview.getHolder();// 取得holder
holder.addCallback(this); // holder加入回撥介面
// setType必須設定,要不出錯.
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
class TestVideoListener implements OnClickListener {
@Override
public void onClick(View v) {
if (v == start) {
mediarecorder = new MediaRecorder();// 建立mediarecorder物件
// 設定錄製視訊源為Camera(相機)
mediarecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
// 設定錄製完成後視訊的封裝格式THREE_GPP為3gp.MPEG_4為mp4
mediarecorder
.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
// 設定錄製的視訊編碼h263 h264
mediarecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
// 設定視訊錄製的解析度。必須放在設定編碼和格式的後面,否則報錯
mediarecorder.setVideoSize(176, 144);
// 設定錄製的視訊幀率。必須放在設定編碼和格式的後面,否則報錯
mediarecorder.setVideoFrameRate(20);
mediarecorder.setPreviewDisplay(surfaceHolder.getSurface());
// 設定視訊檔案輸出的路徑
mediarecorder.setOutputFile("/sdcard/love.3gp");
try {
// 準備錄製
mediarecorder.prepare();
// 開始錄製
mediarecorder.start();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (v == stop) {
if (mediarecorder != null) {
// 停止錄製
mediarecorder.stop();
// 釋放資源
mediarecorder.release();
mediarecorder = null;
}
}
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// 將holder,這個holder為開始在oncreat裡面取得的holder,將它賦給surfaceHolder
surfaceHolder = holder;
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
// 將holder,這個holder為開始在oncreat裡面取得的holder,將它賦給surfaceHolder
surfaceHolder = holder;
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// surfaceDestroyed的時候同時物件設定為null
surfaceview = null;
surfaceHolder = null;
mediarecorder = null;
}
}
main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1" >
<SurfaceView
android:id="@+id/surfaceview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="4"
android:gravity="center"
android:orientation="vertical" >
<Button
android:id="@+id/start"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Start" />
<Button
android:id="@+id/stop"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Stop" />
</LinearLayout>
</LinearLayout>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.demo"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity android:name=".TestBasicVideo" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.CAMERA" >
</uses-permission>
<uses-permission android:name="android.permission.RECORD_AUDIO" >
</uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" >
</uses-permission>
</manifest>