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Android 中使用MediaRecorder进行录像详解(视频录制)
来源:互联网   发布日期:2015-09-29 10:19:15   浏览:15413次  

导读:测试DEMO,里面注释很详细。简单的视频录制功能.package com.video;import java.io.IOException;import android.app.Activity;import android.content.pm.ActivityInfo;import android.graphics.PixelForma......

测试DEMO,里面注释很详细。简单的视频录制功能.

package com.video;

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:一个简单的录制视频例子<BR>

* PS:实现基本的录制保存文件 <BR>

*

* @version 1.00 2011/09/21

* @author CODYY)peijiangping

*/

public class TestBasicVideo extends Activity implements SurfaceHolder.Callback {

private Button start;// 开始录制按钮

private Button stop;// 停止录制按钮

private MediaRecorder mediarecorder;// 录制视频的类

private SurfaceView surfaceview;// 显示视频的控件

// 用来显示视频的一个接口,我靠不用还不行,也就是说用mediarecorder录制视频还得给个界面看

// 想偷偷录视频的同学可以考虑别的办法。。嗯需要实现这个接口的Callback接口

private SurfaceHolder surfaceHolder;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题栏

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);// 设置全屏

// 设置横屏显示

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

// 选择支持半透明模式,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加入回调接口

// setType必须设置,要不出错.

holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

}

class TestVideoListener implements OnClickListener {

@Override

public void onClick(View v) {

if (v == start) {

mediarecorder = new MediaRecorder();// 创建mediarecorder对象

// 设置录制视频源为Camera(相机)

mediarecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

// 设置录制完成后视频的封装格式THREE_GPP为3gp.MPEG_4为mp4

mediarecorder

.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);

// 设置录制的视频编码h263 h264

mediarecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);

// 设置视频录制的分辨率。必须放在设置编码和格式的后面,否则报错

mediarecorder.setVideoSize(176, 144);

// 设置录制的视频帧率。必须放在设置编码和格式的后面,否则报错

mediarecorder.setVideoFrameRate(20);

mediarecorder.setPreviewDisplay(surfaceHolder.getSurface());

// 设置视频文件输出的路径

mediarecorder.setOutputFile("/sdcard/love.3gp");

try {

// 准备录制

mediarecorder.prepare();

// 开始录制

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) {

// 停止录制

mediarecorder.stop();

// 释放资源

mediarecorder.release();

mediarecorder = null;

}

}

}

}

@Override

public void surfaceChanged(SurfaceHolder holder, int format, int width,

int height) {

// 将holder,这个holder为开始在oncreat里面取得的holder,将它赋给surfaceHolder

surfaceHolder = holder;

}

@Override

public void surfaceCreated(SurfaceHolder holder) {

// 将holder,这个holder为开始在oncreat里面取得的holder,将它赋给surfaceHolder

surfaceHolder = holder;

}

@Override

public void surfaceDestroyed(SurfaceHolder holder) {

// surfaceDestroyed的时候同时对象设置为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.video"

android:versionCode="1"

android:versionName="1.0" >

<application

android:icon="@drawable/icon"

android:label="@string/app_name" >

<activity

android:label="@string/app_name"

android:name=".TestBasicVideo" >

<intent-filter >

<action android:name="android.intent.action.MAIN" />

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

</intent-filter>

</activity>

</application>

<uses-sdk android:minSdkVersion="8" />

<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>

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