Android视频录制小例子

转于：http://blog.csdn.net/ouyang_peng/article/details/12068331

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下面就看看该小例子的代码吧。

文件1.该应用的布局文件，res/layout/main.xml

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<FrameLayoutxmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"android:layout_height="fill_parent">
<SurfaceViewandroid:id="@+id/surfaceView"
android:layout_width="fill_parent"android:layout_height="fill_parent"/>
<RelativeLayoutandroid:layout_width="fill_parent"
android:layout_height="fill_parent"android:visibility="gone"
android:id="@+id/buttonlayout">
<Buttonandroid:layout_width="wrap_content"
android:layout_height="wrap_content"android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"android:layout_marginRight="10dp"
android:text="@string/recoderbutton"android:onClick="recoder"
android:id="@+id/recoderbutton"/>
<Buttonandroid:layout_width="wrap_content"
android:layout_height="wrap_content"android:layout_toLeftOf="@id/recoderbutton"
android:layout_alignTop="@id/recoderbutton"android:layout_marginRight="30dp"
android:text="@string/stopbutton"android:onClick="stop"
android:id="@+id/stopbutton"
android:enabled="false"/>
</RelativeLayout>
</FrameLayout>

文件2:布局文件所用到的资源文件，res/values/string.xml

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<?xmlversion="1.0"encoding="utf-8"?>
<resources>
<stringname="hello">HelloWorld,RecoderActivity!</string>
<stringname="app_name">视频刻录小例子</string>
<stringname="recoderbutton">刻录</string>
<stringname="stopbutton">停止</string>
<stringname="noSDcard">检测到手机没有存储卡！请插入手机存储卡再开启本应用</string>
<stringname="maxDuration">已经达到最长录制时间</string>
</resources>

文件3:该应用的主程序，RecoderActivity.java

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packagecn.oyp.recoder;
importjava.io.File;
importandroid.app.Activity;
importandroid.content.pm.ActivityInfo;
importandroid.media.MediaRecorder;
importandroid.media.MediaRecorder.OnInfoListener;
importandroid.os.Bundle;
importandroid.os.Environment;
importandroid.view.MotionEvent;
importandroid.view.SurfaceHolder;
importandroid.view.SurfaceView;
importandroid.view.View;
importandroid.view.ViewGroup;
importandroid.view.Window;
importandroid.view.WindowManager;
importandroid.widget.Button;
importandroid.widget.RelativeLayout;
importandroid.widget.Toast;
publicclassRecoderActivityextendsActivity{
//用来显示图片
privateSurfaceViewsurfaceView;
//刻录和停止按钮布局
privateRelativeLayoutbuttonlayout;
//刻录按钮
privateButtonrecoderbutton;
//停止按钮
privateButtonstopbutton;
//媒体刻录对象
privateMediaRecordermediaRecorder;
/**Calledwhentheactivityisfirstcreated.*/
@Override
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
//窗口特效为无标题
requestWindowFeature(Window.FEATURE_NO_TITLE);
//设置窗口全屏
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
//设定屏幕显示为横向
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
setContentView(R.layout.main);
buttonlayout=(RelativeLayout)this.findViewById(R.id.buttonlayout);
recoderbutton=(Button)this.findViewById(R.id.recoderbutton);
stopbutton=(Button)this.findViewById(R.id.stopbutton);
surfaceView=(SurfaceView)this.findViewById(R.id.surfaceView);
//获取的画面直接输出到屏幕上
surfaceView.getHolder()
.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
//画面分辨率
surfaceView.getHolder().setFixedSize(176,144);
//保持屏幕高亮
surfaceView.getHolder().setKeepScreenOn(true);
}
//点击刻录按钮处理方法
publicvoidrecoder(Viewv){
try{
//判断是否存在SD卡
if(Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)){
//将刻录的视频保存到SD卡中
FilevideoFile=newFile(
Environment.getExternalStorageDirectory(),
System.currentTimeMillis()+".3gp");
mediaRecorder=newMediaRecorder();
//设置声音采集来源于麦克风
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
//设置视频采集来源于摄像头
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
//设置输出格式为3gp
mediaRecorder
.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
//设置视频尺寸
mediaRecorder.setVideoSize(surfaceView.getWidth(),
surfaceView.getHeight());
//设置每秒钟捕捉画面个数为5帧
mediaRecorder.setVideoFrameRate(5);
//设置声音编码
mediaRecorder
.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
//设置视频编码
mediaRecorder.setAudioEncoder(MediaRecorder.VideoEncoder.H264);
//设置视频的最大持续时间
mediaRecorder.setMaxDuration(10000);
mediaRecorder.setOnInfoListener(newOnInfoListener(){
@Override
publicvoidonInfo(MediaRecordermr,intwhat,intextra){
if(what==MediaRecorder.MEDIA_RECORDER_INFO_MAX_DURATION_REACHED){
Toast.makeText(getApplicationContext(),
R.string.maxDuration,Toast.LENGTH_LONG)
.show();
if(mediaRecorder!=null){
mediaRecorder.stop();
mediaRecorder.release();
mediaRecorder=null;
}
}
}
});
//设置刻录的视频保存路径
mediaRecorder.setOutputFile(videoFile.getAbsolutePath());
//设置预览显示
mediaRecorder.setPreviewDisplay(surfaceView.getHolder()
.getSurface());
//预期准备
mediaRecorder.prepare();
//开始刻录
mediaRecorder.start();
}else{
Toast.makeText(getApplicationContext(),R.string.noSDcard,
Toast.LENGTH_LONG).show();
}
}catch(Exceptione){
e.printStackTrace();
}
//刻录按钮不可点击
recoderbutton.setEnabled(false);
//停止按钮可点击
stopbutton.setEnabled(true);
}
//点击停止按钮处理方法
publicvoidstop(Viewv){
//停止刻录,并释放资源
if(mediaRecorder!=null){
mediaRecorder.stop();
mediaRecorder.release();
mediaRecorder=null;
}
//刻录按钮可点击
recoderbutton.setEnabled(true);
//停止按钮不可点击
stopbutton.setEnabled(false);
}
/**当触摸屏幕的时候，将对焦和拍照按钮布局显示出来*/
@Override
publicbooleanonTouchEvent(MotionEventevent){
if(event.getAction()==MotionEvent.ACTION_DOWN){
buttonlayout.setVisibility(ViewGroup.VISIBLE);
returntrue;
}
returnsuper.onTouchEvent(event);
}
}

文件4:该应用的描述文件，AndroidManifest.xml

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<?xmlversion="1.0"encoding="utf-8"?>
<manifestxmlns:android="http://schemas.android.com/apk/res/android"
package="cn.oyp.recoder"android:versionCode="1"android:versionName="1.0">
<uses-sdkandroid:minSdkVersion="8"/>
<uses-permissionandroid:name="android.permission.CAMERA"/>
<uses-permissionandroid:name="android.permission.RECORD_AUDIO"/>
<uses-permissionandroid:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
<uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<applicationandroid:icon="@drawable/icon"android:label="@string/app_name">
<activityandroid:name=".RecoderActivity"android:label="@string/app_name"
android:screenOrientation="landscape">
<intent-filter>
<actionandroid:name="android.intent.action.MAIN"/>
<categoryandroid:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>

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