扣丁学堂笔记第23天Camera、音频录制与Vitamio框架

1.Camera

概述与拍照

录制视频

拍照与录频代码

MainActivity

package com.example.cameratest;

import java.io.File;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.View;

public class MainActivity extends Activity {

	private static final int MEDIA_TYPE_IMAGE = 1;
	private static final int MEDIA_TYPE_VIDEO = 2;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	}

	public void imageCaptureClick(View view) {
		Intent intent = new Intent();
		intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
		intent.putExtra(MediaStore.EXTRA_OUTPUT, getOutputMediaFile(MEDIA_TYPE_IMAGE));
		startActivityForResult(intent, MEDIA_TYPE_IMAGE);
	}

	public void videoCaptureClick(View view) {
		Intent intent = new Intent();
		intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
		intent.putExtra(MediaStore.EXTRA_OUTPUT, getOutputMediaFile(MEDIA_TYPE_VIDEO));
		intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
		startActivityForResult(intent, MEDIA_TYPE_VIDEO);
	}

	
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		// TODO Auto-generated method stub
		super.onActivityResult(requestCode, resultCode, data);
		switch(requestCode){
		case RESULT_OK:
			if(MEDIA_TYPE_IMAGE==requestCode){
				Uri uri = data.getData();
				System.out.println(file);
			}else if(MEDIA_TYPE_VIDEO==requestCode){
				System.out.println(file);
				System.out.println(data.getData());
			}
			break;
		
		}
	}
	
	File file = null;
	private Uri getOutputMediaFileUri(int type) {
		file = getOutputMediaFile(type);
		return Uri.fromFile(file);

	}

	private File getOutputMediaFile(int type) {
		File file = null;
		String rootPath = null;
		switch (type) {
		case MEDIA_TYPE_IMAGE:
			rootPath = Environment.getExternalStoragePublicDirectory(
					Environment.DIRECTORY_PICTURES).getPath();
			file = new File(rootPath + File.separator + ".jpg");
			break;
		case MEDIA_TYPE_VIDEO:
			rootPath = Environment.getExternalStoragePublicDirectory(
					Environment.DIRECTORY_MOVIES).getPath();
			file = new File(rootPath + File.separator + ".mp4");
			break;
		}

		return file;

	}
}

activity_main

<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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.cameratest.MainActivity" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:text="拍照" 
        android:onClick="imageCaptureClick"/>

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button1"
        android:layout_alignRight="@+id/button1"
        android:layout_below="@+id/button1"
        android:text="录制视频" 
        android:onClick="videoCaptureClick"/>

</RelativeLayout>

AndroidManifest

<uses-permission android:name="android.permission.CAMERA"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
	<uses-permission android:name="android.permission.RECORD_AUDIO"/>

2.音频录制

MainActivity

package com.example.mediarecordtest;

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

import android.app.Activity;
import android.media.MediaRecorder;
import android.media.MediaRecorder.OnErrorListener;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.Button;


public class MainActivity extends Activity implements OnErrorListener{

	private MediaRecorder mr;
	private boolean prepared = false;
	private Button btn_recorder,btn_stop;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn_recorder = (Button) findViewById(R.id.button1);
        btn_stop = (Button) findViewById(R.id.button2);
        mr = new MediaRecorder();
        init();
    }


    private void init() {
		// TODO Auto-generated method stub
    	mr.reset();
    	mr.setAudioSource(MediaRecorder.AudioSource.MIC);//设置音源
    	mr.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);//设置音频格式
    	mr.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);//设置音频解码
    	String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC)+File.separator+System.currentTimeMillis()+".mp3";
    	mr.setOutputFile(path);
    	try {
			mr.prepare();
			prepared = true;
		}catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
    	btn_stop.setEnabled(false);
	}


	public void recordClick(View view){
    	if(prepared){
    		mr.start();
    		prepared = false;
    		btn_stop.setEnabled(true);
    		btn_recorder.setEnabled(false);
    	}
    }
    
    public void stopClick(View view){
    	mr.stop();
    	btn_stop.setEnabled(false);
    	btn_recorder.setEnabled(true);
    }

    @Override
    protected void onDestroy() {
    	// TODO Auto-generated method stub
    	super.onDestroy();
    	if(mr!=null){
    		mr.release();
    	}
    }

	@Override
	public void onError(MediaRecorder mr, int what, int extra) {
		// TODO Auto-generated method stub
		mr.reset();
	}
}

activity_main

<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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.mediarecordtest.MainActivity" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:text="录制音频"
        android:onClick="recordClick" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button1"
        android:layout_alignRight="@+id/button1"
        android:layout_below="@+id/button1"
        android:text="停止录制"
		android:onClick="stopClick"/>

</RelativeLayout>

AndroidManifest

<uses-permission android:name="android.permission.RECORD_AUDIO"/>

3.Vitamio框架

简介与导入依赖

播放音频

播放视频

详见：http://blog.csdn.net/dt235201314/article/details/50598882