在我的应用程序中，我试图为用户提供两个功能。一个是上传带有图片的帖子，另一个是上传没有图片的帖子。为此，我创建了Strings nonselected_image和selected_image（或selected_bitmap）。如果用户按下其中一个TextViews，其中一个字符串将在intent中传递。当用户希望创建非照片帖时，它的效果很好，但当他想要创建一张带照片的照片时，会有两个帖子出现，一个有照片而另一个没有。我错了什么？这是我的代码。
将意图和字符串发送到下一个活动
TextView nextScreen = (TextView) view.findViewById(R.id.tvNext);
nextScreen.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d(TAG, "onClick: navigating to the final share screen.");
if (isRootTask()) {
Intent intent = new Intent(getActivity(), NextActivity.class);
intent.putExtra(getString(R.string.selected_image), mSelectedImage);
startActivity(intent);
} else {
Intent intent = new Intent(getActivity(), AccountSettingsActivity.class);
intent.putExtra(getString(R.string.selected_image), mSelectedImage);
intent.putExtra(getString(R.string.return_to_fragment), getString(R.string.edit_profile_fragment));
startActivity(intent);
getActivity().finish();
}
}
});
noPhoto.setOnClickListener(new View.OnClickListener(){
public void onClick (View v) {
mSelectedImage = null;
Intent intent = new Intent(getActivity(), NextActivity.class);
intent.putExtra(getString(R.string.nonselected_image), nonSelectedImage);
startActivity(intent);
}
});
接收意图并采取相应的行动以传递变量
public void onClick(View v) {
Log.d(TAG, "onClick: navigating to the final share screen.");
//upload the image to firebase
// Toast.makeText(NextActivity.this, "Attempting to upload new photo", Toast.LENGTH_SHORT).show();
String caption = mCaption.getText().toString();
if(intent.hasExtra(getString(R.string.selected_image))){
imgUrl = intent.getStringExtra(getString(R.string.selected_image));
Toast.makeText(NextActivity.this, "Attempting to upload a normal photo", Toast.LENGTH_SHORT).show();
mFirebaseMethods.uploadNewPhoto(getString(R.string.new_photo), caption, imageCount, imgUrl,null);
}
else if(intent.hasExtra(getString(R.string.selected_bitmap))){
bitmap = (Bitmap) intent.getParcelableExtra(getString(R.string.selected_bitmap));
Toast.makeText(NextActivity.this, "Attempting to upload a new bitmap", Toast.LENGTH_SHORT).show();
mFirebaseMethods.uploadNewPhoto(getString(R.string.new_photo), caption, imageCount, null,bitmap);
}
else if(intent.hasExtra(getString(R.string.nonselected_image)));{
Toast.makeText(NextActivity.this, "Attempting to upload new photo", Toast.LENGTH_SHORT).show();
imgUrl = intent.getStringExtra(getString(R.string.nonselected_image));
mFirebaseMethods.uploadNoPhoto(getString(R.string.new_photo), caption, imageCount, imgUrl, null); // HERE IS THE ERROR
}