从图库/相机/投放箱等选择图片 [英] Pick Image from Gallery/Camera/DropBox etc
本文介绍了从图库/相机/投放箱等选择图片的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何让用户从摄像机
/ 图库
/ DropBox的选择图像选项
或设备的任何其他文件系统,并显示在一个活动作为的ImageView
对象。
How to give user the option to choose image from Camera
/Gallery
/DropBox
OR any other File systems from the device and show it in an activity as an ImageView
object.
推荐答案
有关从摄像头/相册/ DropBox的或设备的任何其他文件系统采摘图像就叫隐含意图...
For picking image from Camera/Gallery/DropBox OR any other File systems from the device just call implicit intent...
随着code可以帮助你......
Following code may helps you...
pickbtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v){
if (Environment.getExternalStorageState().equals("mounted")){
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_PICK);
startActivityForResult(Intent.createChooser(intent, "Select Picture:"), Constants.PICK_IMAGE_FROM_LIBRARY);
}
}
});
现在使用OnActivity结果得到的数据...
Now use OnActivity result for getting data...
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode == Constants.PICK_IMAGE_FROM_LIBRARY)
{
if (resultCode == RESULT_OK) {
Uri selectedImageUri = data.getData();
String selectedImagePath = getPath(selectedImageUri);
mImagePath = selectedImagePath;
Bitmap photo = getPreview(selectedImagePath);
mImageViewProfileImage.setImageBitmap(photo);
}
}
public String getPath(Uri uri)
{
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
public Bitmap getPreview(String fileName)
{
File image = new File(fileName);
BitmapFactory.Options bounds = new BitmapFactory.Options();
bounds.inJustDecodeBounds = true;
BitmapFactory.decodeFile(image.getPath(), bounds);
if ((bounds.outWidth == -1) || (bounds.outHeight == -1))
{
return null;
}
int originalSize = (bounds.outHeight > bounds.outWidth) ? bounds.outHeight : bounds.outWidth;
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inSampleSize = originalSize / 64;
return BitmapFactory.decodeFile(image.getPath(), opts);
}
}
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