如何使用 file:// 方案从 Uri 设置图像

Question

I managed to use myimageview.setImageUri when the scheme was content:// But it doesnt work if my Uri has a file:// scheme. What is wrong and how can I make it work?

I have given both read and write permission.

Edit:

To make sure I haven't messed up anything, I created a whole new project.

Mainactivity:

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Intent intent = getIntent();
    ArrayList<Uri> myimageUri = null;
    myimageUri = intent.getParcelableArrayListExtra(Intent.EXTRA_STREAM);
    Uri theuri = myimageUri.get(0);
    ImageView myimageView = findViewById(R.id.imageView);
    myimageView.setImageURI(theuri);
}

Attaching a debugger I found out that theuri is

file:///storage/emulated/0/WhatsApp/Media/WhatsApp%20Images/IMG-20171101-WA0005.jpg

It still doesn't work, but content :/// URIs work.

Answer 1

You need to decode image file to a bitmap and give it to ImageView.

Bitmap  mBitmap = Media.getBitmap(this.getContentResolver(), yourUri); 
imageView.setImageBitmap(bitmap);

Answer 2

Try following code:

InputStream in = myimageView.g etContext().getContentResolver(). openInputStream(theuri);
Bitmap bitmap = BitmapFactory.decodeStream(in);
in.close();
myimageView.setImageBitmap(bitmap);