【Android应用实例00】 用摄像头录制视频并本地保存

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="${relativePackage}.${activityClass}" >
<SurfaceView
android:id="@+id/surfaceview"
android:layout_width="400dp"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_margin="3dp" />

<LinearLayout
android:id="@+id/li1"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/surfaceview"
>
<Button android:id="@+id/start"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="start"/>
<Button android:id="@+id/stop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="stop"/>
<Button
android:id="@+id/card"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="setID"/>

</LinearLayout>

<LinearLayout
android:id="@+id/li2"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/surfaceview"
android:layout_below="@+id/li1"
>
<RadioGroup
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/radiogroup1"

>
<RadioButton
android:id="@+id/rb1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="warpCopper"/>
<RadioButton
android:id="@+id/rb2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="warpA4"/>
<RadioButton
android:id="@+id/rb3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="cutEyeCopp"/>
<RadioButton
android:id="@+id/rb4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="movEyeA4"/>
<RadioButton
android:id="@+id/rb5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="netVideo   "/>
<RadioButton
android:id="@+id/rb6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="netPicture"/>
<RadioButton
android:id="@+id/rb7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="netA4       "/>
<RadioButton
android:id="@+id/rb8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="netCopper"/>

</RadioGroup>
</LinearLayout>

<LinearLayout
android:id="@+id/li3"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/li2"
android:layout_below="@+id/li1"
>
<RadioGroup
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/radiogroup2"

>
<RadioButton
android:id="@+id/rb11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="LR"/>
<RadioButton
android:id="@+id/rb22"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="NR"/>
<RadioButton
android:id="@+id/rb33"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="HR"/>

</RadioGroup>
</LinearLayout>

</RelativeLayout>

package com.example.videodemo;

import java.io.File;
import java.io.IOException;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.hardware.Camera.CameraInfo;
import android.hardware.Camera.Parameters;
import android.media.MediaRecorder;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
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.view.inputmethod.EditorInfo;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
public class TestBasicVideo extends Activity  implements  OnClickListener,SurfaceHolder.Callback,RadioGroup.OnCheckedChangeListener
{

private Button start;// 开始录制按钮
private Button stop;
private Button card;
private RadioGroup radioGroup1,radioGroup2;
private RadioButton rb1,rb2,rb3,rb4,rb5,rb6,rb7,rb8;
private static MediaRecorder mediarecorder;// 录制视频的类
private SurfaceView surfaceview;// 显示视频的控件
private String  resolution_str_;
String pose_mode_str_;
String camera_mode_str_;
String  Indoor_str_;
String idcard;
//String device = "Phone";
private SurfaceHolder surfaceHolder;
AlertDialog aler = null;
@SuppressWarnings({ "deprecation", "unused" })
private static Camera myCamera = null;
@SuppressWarnings({ "deprecation", "unused" })
private Camera.Parameters myParameters;
private Camera.AutoFocusCallback mAutoFocusCallback=null;

@SuppressWarnings("deprecation")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//初始化屏幕设置
requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题栏
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);// 设置全屏
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); // 设置横屏显示
// 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();
}

@SuppressWarnings("deprecation")
private void init() {

start = (Button) this.findViewById(R.id.start);
stop = (Button) this.findViewById(R.id.stop);
card = (Button) this.findViewById(R.id.card);

radioGroup1 = (RadioGroup) this.findViewById(R.id.radiogroup1);
radioGroup2 = (RadioGroup) this.findViewById(R.id.radiogroup2);

radioGroup1.setOnCheckedChangeListener(this);
radioGroup2.setOnCheckedChangeListener(this);
start.setOnClickListener(this);
stop.setOnClickListener(this);
card.setOnClickListener(this);

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);
if(null == myCamera) {
// 打开前置摄像头
int cameraCount = 0;
@SuppressWarnings("unused")
Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
cameraCount = Camera.getNumberOfCameras(); // get cameras number

for ( int camIdx = 0; camIdx < cameraCount;camIdx++ ) {
Camera.getCameraInfo( camIdx, cameraInfo ); // get camerainfo
if ( cameraInfo.facing ==Camera.CameraInfo.CAMERA_FACING_FRONT ) {
// 代表摄像头的方位，目前有定义值两个分别为CAMERA_FACING_FRONT前置和CAMERA_FACING_BACK后置
try {
myCamera = Camera.open( camIdx );
} catch (RuntimeException e) {
e.printStackTrace();
break;
}
}
}
}
}

@Override
public void onCheckedChanged(RadioGroup radioGroup1, int checkedId) {
switch (checkedId)
{
case R.id.rb1:
pose_mode_str_ = "warpCopperPhoto";
Log.i("tag","warpCopperPhoto");
break;
case R.id.rb2:
Log.i("tag","warpA4Photo");
pose_mode_str_ = "warpA4Photo";
break;
case R.id.rb3:
pose_mode_str_ = "cutEyeCopperPhoto";
Log.i("tag","cutEyeCopperPhoto");
break;
case R.id.rb4:
pose_mode_str_ = "moveEyeA4Photo";
Log.i("tag","moveEyeA4Photo");
break;
case R.id.rb5:
pose_mode_str_ = "netVideo";
Log.i("tag","netVideo");
break;
case R.id.rb6:
pose_mode_str_ = "netPicture";
Log.i("tag","netPicture");
break;
case R.id.rb7:
pose_mode_str_ = "netA4Photo";
Log.i("tag","netA4Photo");
break;
case R.id.rb8:
pose_mode_str_ = "netCopperPhoto";
Log.i("tag","netCopperPhoto");
break;
case R.id.rb11:
resolution_str_= "LR";
Log.i("tag","LR");
break;
case R.id.rb22:
resolution_str_= "NR";
Log.i("tag","NR");
break;
case R.id.rb33:
resolution_str_= "HR";
Log.i("tag","HR");
break;
}
}

@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.start:
if(null == myCamera) {
// 打开前置摄像头
int cameraCount = 0;
@SuppressWarnings("unused")
Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
cameraCount = Camera.getNumberOfCameras(); // get cameras number

for ( int camIdx = 0; camIdx < cameraCount;camIdx++ ) {
Camera.getCameraInfo( camIdx, cameraInfo ); // get camerainfo
if ( cameraInfo.facing ==Camera.CameraInfo.CAMERA_FACING_FRONT ) {
// 代表摄像头的方位，目前有定义值两个分别为CAMERA_FACING_FRONT前置和CAMERA_FACING_BACK后置
try {
myCamera = Camera.open( camIdx );
} catch (RuntimeException e) {
e.printStackTrace();
break;
}
}
}
}
myCamera.unlock();
if (null == mediarecorder) {
mediarecorder = new MediaRecorder();// 创建mediarecorder对象
}
mediarecorder.setCamera(myCamera);
// 设置录制视频源为Camera(相机)
mediarecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
//                 mediarecorder.setOrientationHint(270);//视频旋转90度

// 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());

String name = "fake_"+resolution_str_+"_"+"Phone"+"_"+"Indoor_"+ pose_mode_str_+"_"+idcard+".mp4";
File file = new File("/sdcard/video/");
file.mkdirs();// 创建文件夹
String fileName = "/sdcard/video/" + name;
// 设置视频文件输出的路径
mediarecorder.setOutputFile(fileName);
try {
mediarecorder.prepare(); // 准备录制
mediarecorder.start(); // 开始录制
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;

case R.id.stop:
if (mediarecorder != null) {
mediarecorder.stop();  // 停止录制
mediarecorder.release();   // 释放资源
mediarecorder = null;
}
if(myCamera !=null){
myCamera.release();
myCamera = null;
}
break;

case R.id.card:
final EditText filename = new EditText(this);
filename.setInputType(EditorInfo.TYPE_CLASS_PHONE);//设置输入时是数字键盘
Builder alerBuidler = new Builder(this);
alerBuidler
.setTitle("请输入工号")
.setView(filename)
.setPositiveButton("确定",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
idcard = filename.getText().toString();
}
});
aler = alerBuidler.create();
aler.setCanceledOnTouchOutside(false);
aler.show();
break;
}
}

@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;
}
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.videodemo"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="21" />

<application
android:allowBackup="true"
android:icon="@drawable/icon"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".TestBasicVideo"
android:label="@string/app_name" >
<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>