删除文本会在editText中留下@string内容

Question

我有一个简单的editText控件。当我按下删除时，它会向后移动但不会删除hint_status中的渲染文本。

这是什么原因？

<EditText
            android:id="@+id/editStatus"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_alignParentLeft="true"
            android:layout_below="@+id/buttonTweet"
            android:ems="10"
            android:inputType="textMultiLine"
            android:text="@string/hint_status" >

            <requestFocus />
</EditText>

视图如下所示

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {


        View view = inflater.inflate(R.layout.fragment_status, container, false);


        editStatus = (EditText) view.findViewById(R.id.editStatus);
        buttonTweet = (Button) view.findViewById(R.id.buttonTweet);
        textCount = (TextView) view.findViewById(R.id.textCount);

        buttonTweet.setOnClickListener(this);
        editStatus.setOnClickListener(this);

        defaultTextColor = textCount.getTextColors().getDefaultColor();
        editStatus.addTextChangedListener(new TextWatcher() {

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {


            }

            @Override
            public void beforeTextChanged(CharSequence s, int start, int count,
                    int after) {
                // TODO Auto-generated method stub

            }

            @Override
            public void afterTextChanged(Editable s) {
                int count = 140 - editStatus.length();
                textCount.setText(Integer.toString(count));
                textCount.setTextColor(Color.GREEN);
                if (count < 10) 
                    textCount.setTextColor(Color.RED);
                else
                    textCount.setTextColor(defaultTextColor);

            }
        });
        return view;

    }

@Override
    public void onClick(View v) {
        String status = editStatus.getText().toString();
        Log.d(TAG, "onClicked with status: " + status);

    if (v == editStatus) {
        editStatus.setHint("");
        editStatus.setText("");
    }

        new PostTask().execute(status);

    }

Answer 1

为了显示提示，您必须使用android:hint XML注释。

你的XML看起来像这样：

<EditText
            android:id="@+id/editStatus"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_alignParentLeft="true"
            android:layout_below="@+id/buttonTweet"
            android:ems="10"
            android:inputType="textMultiLine"
            android:hint="@string/hint_status" >

            <requestFocus />
</EditText>