Android调用系统多媒体库
这是我封装的一个多媒体工具类，所有调用都是基于系统多媒体库的！
多媒体工具类：package com.team618.mediatest.cn;
import java.io.ByteArrayOutputStream;
import java.io.File;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.text.format.Time;
public class MediaFactory implements Constant{
static String nowtime = null;
public static String mMediaFilePath;
public static void takePhoto(Context context,String Path)//拍照功能
{
getTime();
mMediaFilePath=Path+nowtime+".jpg";
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(
Path, nowtime+".jpg")));
((Activity)context).startActivityForResult(intent,PHOTOHRAPH);
}
public static void takePViedo(Context context,String Path)//摄像功能
{
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
((Activity)context).startActivityForResult(intent, MEDIAHRAPH);
}
public static void takeAudio(Context context,String Path)//录音功能
{
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("audio/*");
((Activity)context).startActivityForResult(intent, MEDIAHRAPH);
}
/**
@describe
这是一个创建多媒体文件的方法，可以调用系统封装的功能，在进行拍照，录音或者录像
@param 第一个参数是多媒体的类型，第二个参数是存储路径，第三个是文件的名字，第四个是文件的类型
例如： 图片类型 Media_Type="MediaStore.ACTION_IMAGE_CAPTURE" ，此时的文件类型一般为：File_Type=".jpg"
录音类型 Media_Type="MediaStore.Audio.Media.RECORD_SOUND_ACTION" ，此时的文件类型一般为：File_Type=".3gpp"
视频类型 Media_Type="MediaStore.ACTION_VIDEO_CAPTURE" ，此时的文件类型一般为：File_Type=".m4v"；
@return 没有返回值
@throw 没有异常
*/
/* private static void takeMedia(Context context,String Media_Type,String Path,String File_Name,String File_Type)
{
Intent intent = new Intent(Media_Type);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(
Path, File_Name+ File_Type)));
((Activity)context).startActivityForResult(intent, MEDIAHRAPH);
}
*/
/**
@describe
这是一个图像的裁剪功能，这个方法可以启动系统自带的相册，然后我们选择其中的照片进行裁剪
当裁剪完毕后，就会关闭系统的Activity，并返回处理后的图片的缓存
@param 没有参数传入
@return 返回值是一个处理过以后的位图Bitmap
@throw 没有异常
*/
public static void startPhotoZoom(Context context){ //图像裁剪，带有照片的选择功能，
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType(IMAGE_UNSPECIFIED); //设置类型
intent.putExtra("crop", "true"); // aspectX aspectY 是宽高的比例
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1); //
// outputX outputY 是裁剪图片宽高
intent.putExtra("outputX", 64);
intent.putExtra("outputY", 64);
intent.putExtra("return-data", true);
((Activity)context).startActivityForResult(intent, PHOTORESOULT); //
}
public static Bitmap getZoomphoto(Intent data) //图片裁剪的辅助方法，用来获得处理以后的结果照片
{
Bundle extras = data.getExtras();
if (extras != null) {
Bitmap photo = extras.getParcelable("data");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);// (0 - 100)压缩文件
return photo;
// imageView.setImageBitmap(photo);
}
else {
return null;
}
}
/**
* 多媒体文件的选择方法，参数闯入是需要查找的多媒体文件类型，返回值是该多媒体的Uri
*
*
*/
public static void selectMedia(Context context,String MEDIA_UNSPECIFIED)
{
Intent intent = new Intent(Intent.ACTION_PICK, null);
intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,MEDIA_UNSPECIFIED
);
((Activity)context).startActivityForResult(intent, SELECTMEDIA);
}
public static void selectAudio(Context context,String MEDIA_UNSPECIFIED)
{
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("audio/*"); //String AUDIO_AMR = "audio/amr";
intent.setClassName("com.android.soundrecorder","com.android.soundrecorder.SoundRecorder");
((Activity) context).startActivityForResult(intent,SELECTADUIO);
}
/*Uri的作用
* Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
String imgNo = cursor.getString(0); // 图片编号
String imgPath = cursor.getString(1); // 图片文件路径
String imgSize = cursor.getString(2); // 图片大小
String imgName = cursor.getString(3); // 图片文件名
*/
private static void getTime(){
Time t = new Time(); // or Time t=new Time("GMT+8"); 加上Time Zone资料。
t.setToNow(); // 取得系统时间。
int year = t.year;
int month = t.month+1;
int date = t.monthDay;
int hour = t.hour; // 0-23
int minute = t.minute;
int second = t.second;
nowtime=String.valueOf(year)+String.valueOf(month)
+String.valueOf(date)+String.valueOf(hour)
+ String.valueOf(minute)+String.valueOf(second);
}
}主Activity
package com.team618.mediatest.cn;
import java.io.File;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MediaTestActivity extends Activity implements Constant {
/** Called when the activity is first created. */
public File mMediaFile=null; //多媒体文件
public Uri mMediaUri=null; //多媒体文件的uri
public Bitmap mZoomPhoto=null; //缩放后的图片文件
public String Path="/sdcard";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.media_test);
Button takePhoto = (Button) findViewById(R.id.takePhoto);//拍照按钮
Button takeViedo = (Button) findViewById(R.id.takeViedo);//摄像按钮
Button takeAudio = (Button) findViewById(R.id.takeAudio);//录音按钮
Button selectPhoto = (Button) findViewById(R.id.selectPhoto);//选择多媒体文件按钮
Button zoomPhoto = (Button) findViewById(R.id.zoomPhoto);//图片裁减按钮
takePhoto.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
MediaFactory.takePhoto(MediaTestActivity.this,Path);
}
});
takeViedo.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
MediaFactory.takePViedo(MediaTestActivity.this,Path);
}
});
takeAudio.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
MediaFactory.takeAudio(MediaTestActivity.this,Path);
}
});
selectPhoto.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
MediaFactory.selectMedia(MediaTestActivity.this,IMAGE_UNSPECIFIED);
//MediaFactory.selectAudio(MediaTestActivity.this,IMAGE_UNSPECIFIED);
}
});
zoomPhoto.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
MediaFactory.startPhotoZoom(MediaTestActivity.this);
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == NONE)
return;
//����
if (requestCode == PHOTOHRAPH){
mMediaFile=new File(MediaFactory.mMediaFilePath);
}
//�����ý���ļ�
if (requestCode == MEDIAHRAPH){
Cursor cursor = getContentResolver().query(data.getData(), null, null, null, null);
cursor.moveToFirst();
String mediaFilePath = cursor.getString(1); // ͼƬ�ļ�·��
mMediaFile=new File(mediaFilePath);
}
// ��ȡ���ͼƬ������Ƭ��Uri����Ƶ��Uri
if (requestCode == SELECTMEDIA) {
mMediaUri=data.getData();
Cursor cursor = getContentResolver().query(mMediaUri, null, null, null, null);
cursor.moveToFirst();
String mediaFilePath = cursor.getString(1); // ͼƬ�ļ�·��
Log.i("path",mediaFilePath);
}
if (requestCode == SELECTADUIO) {
mMediaUri=data.getData();
Log.i("path",mMediaUri.toString());//����ļ���·��
}
// �õ�ͼƬ���Ŵ�����
if (requestCode == PHOTORESOULT) {
mZoomPhoto=MediaFactory.getZoomphoto(data);
}
super.onActivityResult(requestCode, resultCode, data);
}
}常量类
package com.team618.mediatest.cn;
public interface Constant {
public static final int NONE=0;
public static final int PHOTOHRAPH = 1;// 创建多媒体文件
public static final int MEDIAHRAPH = 2;// 创建多媒体文件
public static final int SELECTMEDIA =3; // 选择多媒体文件
public static final int SELECTADUIO=4;
public static final int PHOTORESOULT=5;// 图片截图处理结果
public static final String IMAGE_UNSPECIFIED = "image/*";
public static final String VIEDO_UNSPECIFIED = "viedo/*";
public static final String AUDIO_UNSPECIFIED = "audio/*";
}xml布局文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="拍照"
android:id="@+id/takePhoto"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="视屏"
android:id="@+id/takeViedo"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="录音"
android:id="@+id/takeAudio"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="找图片"
android:id="@+id/selectPhoto"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="截图"
android:id="@+id/zoomPhoto"
/>
</LinearLayout>注意添加录音权限 <uses-permission android:name="android.permission.RECORD_AUDIO">
</uses-permission>
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