19-拍照与视频刻录

于 2014-08-10 12:52:13 发布
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CC 4.0 BY-SA版权
分类专栏： Android
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://blog.youkuaiyun.com/yongzhian/article/details/38469079

拍照

MainActivity

package cn.itcast.picture;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import android.app.Activity;
import android.hardware.Camera;
import android.hardware.Camera.PictureCallback;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;

public class MainActivity extends Activity {
    private View layout;
    private Camera camera;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        		WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.main);
        
        layout = this.findViewById(R.id.buttonlayout);
        
        SurfaceView surfaceView = (SurfaceView) this.findViewById(R.id.surfaceView);
        surfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        surfaceView.getHolder().setFixedSize(176, 144);
        surfaceView.getHolder().setKeepScreenOn(true);
        surfaceView.getHolder().addCallback(new SurfaceCallback());
    }
    
    public void takepicture(View v){
    	if(camera!=null){
    		switch (v.getId()) {
    		case R.id.takepicture:
    			camera.takePicture(null, null, new MyPictureCallback());
    			break;

    		case R.id.autofocus:
    			camera.autoFocus(null);
    			break;
    		}
    	}
    }
    
    private final class MyPictureCallback implements PictureCallback{
		public void onPictureTaken(byte[] data, Camera camera) {
			try {
				File jpgFile = new File(Environment.getExternalStorageDirectory(), System.currentTimeMillis()+".jpg");
				FileOutputStream outStream = new FileOutputStream(jpgFile);
				outStream.write(data);
				outStream.close();
				camera.startPreview();
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
    	
    }
    
    private final class SurfaceCallback implements Callback{
		public void surfaceCreated(SurfaceHolder holder) {
			try{
				camera = Camera.open();//打开摄像头
				Camera.Parameters parameters = camera.getParameters();
				//Log.i("MainActivity", parameters.flatten());
				parameters.setPreviewSize(800, 480);
				parameters.setPreviewFrameRate(5);
				parameters.setPictureSize(1024,768);
				parameters.setJpegQuality(80);
				camera.setParameters(parameters);
				camera.setPreviewDisplay(holder);
				camera.startPreview();//开始预览
			}catch (Exception e) {
				e.printStackTrace();
			}
		}

		public void surfaceChanged(SurfaceHolder holder, int format, int width,int height) {
		}

		public void surfaceDestroyed(SurfaceHolder holder) {
			if(camera!=null){
				camera.release();
				camera = null;
			}
		}
    	
    }

	@Override
	public boolean onTouchEvent(MotionEvent event) {
		if(event.getAction() == MotionEvent.ACTION_DOWN){
			layout.setVisibility(ViewGroup.VISIBLE);
			return true;
		}
		return super.onTouchEvent(event);
	}
    
    
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
	<SurfaceView  
	    android:layout_width="fill_parent" 
	    android:layout_height="fill_parent" 
	    android:id="@+id/surfaceView"
	    />
    
    <RelativeLayout
   		android:layout_width="fill_parent" 
	    android:layout_height="fill_parent" 
	    android:visibility="gone"
	    android:id="@+id/buttonlayout"
    >
    	<Button
    	android:layout_width="wrap_content" 
	    android:layout_height="wrap_content" 
	    android:layout_alignParentRight="true"
	    android:layout_alignParentBottom="true"
	    android:layout_marginRight="5dp"
	    android:text="@string/takepicture"
	    android:onClick="takepicture"
	    android:id="@+id/takepicture"
    	/>
    	<Button
    	android:layout_width="wrap_content" 
	    android:layout_height="wrap_content" 
	    android:layout_toLeftOf="@id/takepicture"
	    android:layout_alignTop="@id/takepicture"
	    android:layout_marginRight="20dp"
	    android:text="@string/autofocus"
	    android:onClick="takepicture"
	    android:id="@+id/autofocus"
    	/>    
    </RelativeLayout>
</FrameLayout>

layout.xml

 

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">Hello World, MainActivity!</string>
    <string name="app_name">拍照</string>
    <string name="takepicture">拍照</string>
    <string name="autofocus">对焦</string>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="cn.itcast.picture"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MainActivity"
                  android:label="@string/app_name" android:screenOrientation="landscape">
            <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"/>
<!-- 在SDCard中创建与删除文件权限 -->
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
<!-- 往SDCard写入数据权限 -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

</manifest>

视频刻录

package cn.itcast.recorder;

import java.io.File;

import android.app.Activity;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.RelativeLayout;

public class MainActivity extends Activity {
    private SurfaceView surfaceView;
    private RelativeLayout layout;
    private Button recordbutton;
    private Button stopbutton;
    private MediaRecorder mediaRecorder;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.main);
        
        surfaceView = (SurfaceView) this.findViewById(R.id.surfaceView);
        surfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        surfaceView.getHolder().setFixedSize(176, 144);
        surfaceView.getHolder().setKeepScreenOn(true);
        
        layout = (RelativeLayout) this.findViewById(R.id.layout);
        recordbutton = (Button) this.findViewById(R.id.recordbutton);
        stopbutton = (Button) this.findViewById(R.id.stopbutton);
    }

	@Override
	public boolean onTouchEvent(MotionEvent event) {
		if(event.getAction() == MotionEvent.ACTION_DOWN){
			layout.setVisibility(ViewGroup.VISIBLE);
		}
		return super.onTouchEvent(event);
	}
    
    public void record(View v){
    	switch (v.getId()) {
		case R.id.recordbutton:
			try{
				File videoFile = new File(Environment.getExternalStorageDirectory(), System.currentTimeMillis()+ ".3gp");
				mediaRecorder = new MediaRecorder();
				mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
				mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
				mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
				mediaRecorder.setVideoSize(320, 240);
				mediaRecorder.setVideoFrameRate(5);
				mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
				mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
				mediaRecorder.setOutputFile(videoFile.getAbsolutePath());
				mediaRecorder.setPreviewDisplay(surfaceView.getHolder().getSurface());
				mediaRecorder.prepare();
				mediaRecorder.start();
			}catch (Exception e) {
				e.printStackTrace();
			}
			recordbutton.setEnabled(false);
			stopbutton.setEnabled(true);
			break;

		case R.id.stopbutton:
			if(mediaRecorder!=null){
				mediaRecorder.stop();
				mediaRecorder.release();
				mediaRecorder = null;
			}
			recordbutton.setEnabled(true);
			stopbutton.setEnabled(false);
			break;
		}
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="cn.itcast.recorder"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MainActivity"
                  android:label="@string/app_name" android:screenOrientation="landscape">
            <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"
        android:targetSdkVersion="19" /> 
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
 <uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

</manifest> 

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
	<SurfaceView  
	    android:layout_width="fill_parent" 
	    android:layout_height="fill_parent" 
	    android:id="@+id/surfaceView"
	    />
    
    <RelativeLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/layout"
    android:visibility="gone"
    >
    	<Button
    	 android:layout_width="wrap_content"
    	android:layout_height="wrap_content"
    	android:text="@string/recordbutton"
    	android:layout_alignParentRight="true"
    	android:layout_alignParentBottom="true"
    	android:layout_marginRight="10dp"
    	android:id="@+id/recordbutton"
    	android:onClick="record"
    	/>
     	<Button
    	 android:layout_width="wrap_content"
    	android:layout_height="wrap_content"
    	android:text="@string/stopbutton"
    	android:layout_toLeftOf="@id/recordbutton"
    	android:layout_alignTop="@id/recordbutton"
    	android:layout_marginRight="30dp"
    	android:id="@+id/stopbutton"
    	android:enabled="false"
    	android:onClick="record"
    	/>   
    </RelativeLayout>
</FrameLayout>


<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">Hello World, MainActivity!</string>
    <string name="app_name">视频刻录</string>
    <string name="recordbutton">刻录</string>
    <string name="stopbutton">停止</string>
</resources>


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