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ImageView无法在Android 6.0.1智能手机上显示gallery中的图像

imageview android

Sate Wedos · 技术社区 · 8 年前

我想将图像从Gallery显示到ImageView。在emulator Android 4.2.2中,我的代码可以按预期运行。但当我插入智能手机Android 6.0.1时,无法将图像显示到ImageView 这是我的代码:

//Open gallery code
private void showFileChooser() {
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);
    }


//Set ImageView code
@Override
    public 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) {

            filePath = data.getData();
            try {
                imageView = (ImageView) getActivity().findViewById(R.id.imageView);
                bitmap = MediaStore.Images.Media.getBitmap(getActivity().getContentResolver(), filePath);
                imageView.setImageBitmap(bitmap);

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

我的问题。这是因为我的android版本吗?如何解决这个问题? 谢谢

3 回复 | 直到 8 年前

Community Mohan Dere 6 年前

从Android 6.0(API级别23)开始,用户在应用程序运行时授予应用程序权限,而不是在安装应用程序时

if (ContextCompat.checkSelfPermission(getActivity(),
                        Manifest.permission.CAMERA)
                        != PackageManager.PERMISSION_GRANTED) {
                    // User may have declined earlier, ask Android if we should show him a reason

                    if (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(), Manifest.permission.CAMERA)) {
                        // show an explanation to the user
                        ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.CAMERA}, PERMISSIONS_REQUEST_CAPTURE_IMAGE);

                        // Good practise: don't block thread after the user sees the explanation, try again to request the permission.
                    } else {
                        // request the permission.
                        // CALLBACK_NUMBER is a integer constants
                        ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.CAMERA}, PERMISSIONS_REQUEST_CAPTURE_IMAGE);
                        // The callback method gets the result of the request.
                    }
                } else {

                    Intent intent = new Intent();
                    intent.setType("image/*");
                    intent.setAction(Intent.ACTION_GET_CONTENT);
                    startActivityForResult(Intent.createChooser(intent, "Select Picture"), 12);

                }

 @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        //super.onActivityResult(requestCode, resultCode, data);

        if(requestCode==12)
        {
            if(resultCode==RESULT_OK)
            {

                if (data == null) {
                    //Display an error
                    Utils.Toast_S(getActivity(), "No Image Data");

                    return;
                }
                try {
                     inputStream = getContext().getContentResolver().openInputStream(data.getData());

                    imageView.setImageBitmap(BitmapFactory.decodeStream(inputStream));

                    File  file=new File("");
                    file.getName();
                    file.getAbsolutePath();



                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                    Toast.makeText(getContext(), "Exception", Toast.LENGTH_SHORT).show();
                }


            }
        }

    }

Naveed Akhtar 8 年前

这 link 会帮助你的。只需添加 ImageFilePath。Java语言

Mallikarjuna 8 年前

系统权限分为几个保护级别。需要了解的两个最重要的保护级别是正常权限和危险权限:

正常权限涵盖应用程序需要访问应用程序沙盒外数据或资源的区域,但对用户隐私或其他应用程序的操作风险很小。例如,设置时区的权限是正常权限。如果应用程序声明需要正常权限,系统会自动将权限授予该应用程序。有关当前正常权限的完整列表,请参阅正常权限。

[链接] https://developer.android.com/guide/topics/permissions/requesting.html