标签：exif 图库 err rect env file parse har 图片
关键代码:
protected void takePhoto(View v){ if( v.getId() == R.id.btn ) { File dir = new File(Environment.getExternalStorageDirectory(),"Guo"); if(!dir.exists()){ dir.mkdir(); } curFile = new File(dir, System.currentTimeMillis() + ".jpg"); if( !curFile.exists() ){ try{ curFile.createNewFile(); }catch (IOException e){ e.printStackTrace(); } } Intent it = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); it.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(curFile)); startActivityForResult(it, TAKE_PHOTO); } }
处理相机返回数据,即图片数据:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode){
case TAKE_PHOTO:
if(resultCode == RESULT_OK){
//picture.setImageURI(Uri.fromFile(curFile));
int degree = readPictureDegree(curFile.getAbsolutePath());
BitmapFactory.Options opts=new BitmapFactory.Options();
opts.inSampleSize=2;
Bitmap cbitmap = BitmapFactory.decodeFile(curFile.getAbsolutePath(),opts);
Bitmap bitmap = rotaingImageView(degree, cbitmap);
sysImageNotify();
picture.setImageBitmap(bitmap);
}
break;
}
}
照相机拍照后,有些图片是获取图片的旋转角度
// 获取旋转角度 public int readPictureDegree(String path) { int degree = 0; try { ExifInterface exifInterface = new ExifInterface(path); int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL); switch (orientation) { case ExifInterface.ORIENTATION_ROTATE_90: degree = 90; break; case ExifInterface.ORIENTATION_ROTATE_180: degree = 180; break; case ExifInterface.ORIENTATION_ROTATE_270: degree = 270; break; } } catch (IOException e) { e.printStackTrace(); } return degree; }
旋转图片:
/* * 旋转图片 */ public Bitmap rotaingImageView(int angle , Bitmap bitmap) { //旋转图片 动作 Matrix matrix = new Matrix();; matrix.postRotate(angle); // 创建新的图片 Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);return resizedBitmap; }
图片保存进入文件夹后,在系统图库中显示
protected void sysImageNotify(){
// 文件插入系统图库
try {
MediaStore.Images.Media.insertImage(
getContentResolver(),
curFile.getAbsolutePath(), curFile.getName(), null);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
// 最后通知图库更新
sendBroadcast(
new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,
Uri.parse("file://" + Environment.getExternalStorageDirectory())
)
);
}
所需权限:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.CAMERA"/>
标签：exif 图库 err rect env file parse har 图片
原文地址：http://www.cnblogs.com/itfenqing/p/6747207.html
