相关疑难解决方法(0)

我有一个应用程序,它有一个按钮,可以从您的图库中选择一张照片并且工作正常,选择图像后,我的应用程序显示回到活动并在图像视图中显示图像.

每个都工作正常,但有时,当我选择一些特定的图像时,预览没有显示.我也试图压缩图像仍然无法正常工作

我的代码在下面.. 在onCreate()

galeryBtn=(Button)findViewById(R.id.buttonGallery);
galeryBtn.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
      Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
      startActivityForResult(i, RESULT_LOAD_IMAGE);

    }
});

在onActivityResult中(int requestCode,int resultCode,Intent 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();
    // String picturePath contains the path of selected Image

    // Show …

我正在与手机联系人合作.当我点击按钮并获取所有联系信息,如姓名,电子邮件和电话号码时,我想从联系人列表中选择联系人.我只是收到了电子邮件和联系人姓名,但无法获取电话号码.我的代码在下面给出.

             Intent contactPickerIntent = new Intent(Intent.ACTION_PICK,Contacts.CONTENT_URI);
                            startActivityForResult(contactPickerIntent, PICK_CONTACT);
                     }
             });
     }

     @Override
     public void onActivityResult(int reqCode, int resultCode, Intent data) {


           if (resultCode == RESULT_OK) {
                switch (reqCode) 
                {
                case PICK_CONTACT:
                    Cursor cursor = null;
                    String email = "", name = "";
                    try {
                        Uri result = data.getData();
                        //Log.v(DEBUG_TAG, "Got a contact result: " + result.toString());

                        // get the contact id from the Uri
                        String id = result.getLastPathSegment();

                        // query for everything email
                        cursor = getContentResolver().query(Email.CONTENT_URI,  null, Email.CONTACT_ID …