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Android中用Intent提取缩略图和原始图像
来源:互联网   发布日期:2016-01-14 09:14:58   浏览:2072次  

导读:提取图像的Thumbnail:Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null); intent.setType(image/*); intent.putExtra(return-data, true); startActivityForResult(inten......

提取图像的Thumbnail:

Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);

intent.setType("image/*");

intent.putExtra("return-data", true);

startActivityForResult(intent, REQUEST_CODE_PHOTO_PICKED);

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

if (resultCode != RESULT_OK) {

return;

}

Bitmap bitmap = null;

ContentResolver resolver = getContentResolver();

if (requestCode == REQUEST_CODE_PHOTO_PICKED) {

final Bundle extras = data.getExtras();

if (extras != null)

bitmap = extras.getParcelable("data");

}

}

//此方法返回的data 必须小于100k

获取原图:

Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);

intent.setType("image/*");

startActivityForResult(intent, REQUEST_CODE_PHOTO_PICKED);

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

if (resultCode != RESULT_OK) {

return;

}

Bitmap bitmap = null;

ContentResolver resolver = getContentResolver();

if (requestCode == REQUEST_CODE_PHOTO_PICKED) {

try {

Uri originalUri = data.getData();

Uri thumb = Uri.withAppendedPath(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI,

originalUri.getLastPathSegment());

bitmap = MediaStore.Images.Media.getBitmap(resolver, thumb);

} catch (IOException e) {

}

}

}

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