how to get selected image from gallery in android?

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梦谈多话
梦谈多话 2020-12-18 15:58

I have a problem: I have a function that brings me the image from the gallery ;but when I select the image, I don\'t get it.

public void funzione(View v){
in         


        
4条回答
  •  [愿得一人]
    2020-12-18 16:33

    package com.example.assignment;
    
    import android.app.Activity;
    import android.content.Intent;
    import android.database.Cursor;
    import android.graphics.BitmapFactory;
    import android.net.Uri;
    import android.os.Bundle;
    import android.provider.MediaStore;
    import android.view.View;
    import android.widget.Button;
    import android.widget.ImageView;
    import android.os.Bundle;
    import android.app.Activity;
    import android.view.Menu;
    
    public class MainActivity extends Activity {
    
    private static int RESULT_LOAD_IMAGE = 1;
    
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    
        Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadPicture);
        buttonLoadImage.setOnClickListener(new View.OnClickListener() {
    
            @Override
            public void onClick(View arg0) {
    
                Intent i = new Intent(
                        Intent.ACTION_PICK,
                        android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    
                startActivityForResult(i, RESULT_LOAD_IMAGE);
            }
        });
    }
    
    
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
    
        if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
            Uri selectedImage = data.getData();
            String[] filePathColumn = { MediaStore.Images.Media.DATA };
    
            Cursor cursor = getContentResolver().query(selectedImage,
                    filePathColumn, null, null, null);
            cursor.moveToFirst();
    
            int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
            String picturePath = cursor.getString(columnIndex);
            cursor.close();
    
            ImageView imageView = (ImageView) findViewById(R.id.imgView);
            imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
        }
        }
        }
    

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