从库的 ACTION_GET_CONTENT 后返回的 Uri 在 ImageView 的 setImageURI() 中不起作用 [英] Uri returned after ACTION_GET_CONTENT from gallery is not working in setImageURI() of ImageView

问题描述

I am fetching Uri of a image from gallery using

Intent intent = new Intent();  
intent.setType("image/*");  
intent.setAction(Intent.ACTION_GET_CONTENT);  
startActivityForResult(Intent.createChooser(intent, "Choose Picture"), requestCode);

and trying to display the image by

imageView.setImageURI(uri);

here, uri is Uri of the image received in onActivityResult by intent.getData().

but no image is being displayed. Also, for

File file=new File( uri.getPath() );

file.exists() is returning false.

解决方案

The problem is that you getting the Uri but from that uri you have to create Bitmap to show in your Imageview. There are various mechanism to do the same one among them is this code.

Intent intent = new Intent();  
intent.setType("image/*");  
intent.setAction(Intent.ACTION_GET_CONTENT);  
startActivityForResult(Intent.createChooser(intent, "Choose Picture"), 1);

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) 
{
    if(resultCode==RESULT_CANCELED)
    {
        // action cancelled
    }
    if(resultCode==RESULT_OK)
    {
        Uri selectedimg = data.getData();
        imageView.setImageBitmap(MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedimg));
    }
}

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