import java.io.IOException;
import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.media.ExifInterface;
import android.os.Bundle;
import android.provider.MediaStore;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//测试1
//getVideosInfo();
//测试2
//getPhotosInfo();
//测试3
getAudiosInfo();
}
//获取设备上所有的视频信息
private void getVideosInfo() {
ContentResolver contentResolver=getContentResolver();
String [] videoColumns=new String[]{
MediaStore.Video.Media._ID,
MediaStore.Video.Media.DATA,
MediaStore.Video.Media.TITLE,
MediaStore.Video.Media.MIME_TYPE
};
// 两种方法均可
// Cursor cursor=
// this.managedQuery(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, mediaColumns, null, null, null);
Cursor cursor=contentResolver.query
(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, videoColumns, null, null, null);
while (cursor.moveToNext()) {
String _id=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media._ID));
String filePath=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA));
String title=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.TITLE));
String mime_type=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.MIME_TYPE));
System.out.println("_id="+_id);
System.out.println("title="+title);
System.out.println("filePath="+filePath);
System.out.println("mime_type="+mime_type);
}
}
//获取设备上所有的照片信息
private void getPhotosInfo() {
ContentResolver contentResolver=getContentResolver();
String [] photoColumns=new String[]{
MediaStore.Images.Media._ID,
MediaStore.Images.Media.DATA,
MediaStore.Images.Media.TITLE,
MediaStore.Images.Media.MIME_TYPE,
MediaStore.Images.Media.SIZE,
MediaStore.Images.Media.ORIENTATION
};
// 两种方法均可
// Cursor cursor=
// this.managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, mediaColumns, null, null, null);
Cursor cursor=contentResolver.query
(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, photoColumns, null, null, null);
while (cursor.moveToNext()) {
String _id=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID));
String filePath=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA));
String title=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.TITLE));
String mime_type=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.MIME_TYPE));
String size=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.SIZE));
//得到照片旋转角度方法一
String orientation0=cursor.getString
(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.ORIENTATION));
System.out.println("_id="+_id);
System.out.println("size="+size);
System.out.println("title="+title);
System.out.println("filePath="+filePath);
System.out.println("mime_type="+mime_type);
System.out.println("第一处 orientation0="+orientation0);
try {
ExifInterface exifInterface=new ExifInterface(filePath);
String image_length=
exifInterface.getAttribute(ExifInterface.TAG_IMAGE_LENGTH);
String image_width=
exifInterface.getAttribute(ExifInterface.TAG_IMAGE_WIDTH);
String orientation1=
exifInterface.getAttribute(ExifInterface.TAG_ORIENTATION);
String dateTime=
exifInterface.getAttribute(ExifInterface.TAG_DATETIME);
System.out.println("image_length="+image_length);
System.out.println("image_width="+image_width);
System.out.println("dateTime="+dateTime);
//得到照片旋转角度方法二
//应该结合ExifInterface源码分析.
//此处有待于进一步分析和验证
switch (Integer.valueOf(orientation1)) {
case 1:
System.out.println("第二处旋转角度="+0);
break;
case 2:
//matrix.invert(matrix);
break;
case 3:
//matrix.setRotate(180);
System.out.println("第二处旋转角度="+180);
break;
case 4:
//matrix.invert(matrix);
//matrix.setRotate(180);
System.out.println("第二处旋转角度="+180);
break;
case 5:
//matrix.setRotate(90);
//matrix.invert(matrix);
System.out.println("第二处旋转角度="+90);
break;
case 6:
//matrix.setRotate(90);
System.out.println("第二处旋转角度="+90);
break;
case 7:
//matrix.invert(matrix);
//matrix.setRotate(90);
System.out.println("第二处旋转角度="+90);
break;
case 8:
//matrix.setRotate(270);
System.out.println("第二处旋转角度="+270);
break;
default:
break;
}
System.out.println("XXXXXXXXXXXXXXXXXXX");
} catch (IOException e) {
e.printStackTrace();
}
}
}
//获取设备上所有的音频信息
private void getAudiosInfo() {
ContentResolver contentResolver=getContentResolver();
String [] audioColumns=new String[]{
MediaStore.Audio.Media._ID,
MediaStore.Audio.Media.DATA,
MediaStore.Audio.Media.TITLE,
MediaStore.Audio.Media.MIME_TYPE
};
// 两种方法均可
// Cursor cursor=
// this.managedQuery(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, mediaColumns, null, null, null);
Cursor cursor=contentResolver.query
(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, audioColumns, null, null, null);
while (cursor.moveToNext()) {
String _id=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media._ID));
String filePath=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA));
String title=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE));
String mime_type=
cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.MIME_TYPE));
System.out.println("_id="+_id);
System.out.println("title="+title);
System.out.println("filePath="+filePath);
System.out.println("mime_type="+mime_type);
}
}
}
移动开发:Android中MediaStore使用示例
转载文章:http://blog.csdn.net/djy1992/article/details/9948105