android - 单击上传按钮后在另一个 Activity 中显示图像

Question

我想在单击上传按钮后将我的图像显示给另一个 Activity 。我有 2 个 Activity (Main 和 Main2)。目前，我在从图库中选择图像后将 uri 用于下一个 Activity 。我如何在我的上传按钮上设置 uri？

MainActivity.Java

    private void uploadImage(){
        @Override
       public void onResponse(String s) {
           loading.dismiss();
           Toast.makeText(MainActivity.this, s , Toast.LENGTH_LONG).show();
           Intent i = new Intent(MainActivity.this,Main2Activity.class);
           startActivity(i);
           finish();
       }
   },


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

    if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
        Uri filePath = data.getData();
        try {
            bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);
            imageView.setImageBitmap(bitmap);
            Intent i = new Intent(this,Main2Activity.class);
            i.putExtra("imagepath", filePath.toString());
            startActivity(i);


        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Answer 1

您可以按如下方式进行:

定义一个类级变量:

   String filePathString = null;

private void uploadImage(){
 @Override
                public void onResponse(String s) {
                    loading.dismiss();
                    Toast.makeText(MainActivity.this, s , Toast.LENGTH_LONG).show();
                    Intent i = new Intent(MainActivity.this,Main2Activity.class);
                    startActivity(i);
                    finish();
                }
            },


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

    if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
        Uri filePath = data.getData();
        try {
            bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);
            imageView.setImageBitmap(bitmap);
            Intent i = new Intent(this,Main2Activity.class);
            filePathString = filePath.toString();
            i.putExtra("imagepath", filePath.toString());
            startActivity(i);


        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

然后在您的按钮上设置 OnClickListener:

uploadButton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
     Intent i = new Intent(this,Main2Activity.class);
     i.putExtra("imagepath", MainActivity.this.filePathString);
     startActivity(i);
    MainActivity.this.finish();
    }
});