setHintTextColor() in EditText

问题:

I have View in which there are two text boxes, and the user can select text color from another view on the same screen (through dialog box).

So when the user changes color via dialog box, I am changing color of EditText text and its hint. But when there is some text is available in EditText after that user selects other color, then that text is coming in that color. But if I remove all that text then the color of HintText is that of the previous color.

For example, currently if I have red color in text box and the user selects green color so text is there in green color. But if I remove that text then hint text are coming in red even if I change hint color in code. This problem only comes when there is some text there. if it is blank and hint text is there then problem is not coming.

回答1:

Use this to change the hint color. -

editText.setHintTextColor(getResources().getColor(R.color.white));

Solution for your problem -

editText.addTextChangedListener(new TextWatcher() {
    @Override
    public void onTextChanged(CharSequence arg0, int arg1, int arg2,int arg3){
        //do something
    }

    @Override
    public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
        //do something
    }

    @Override
    public void afterTextChanged(Editable arg0) {
        if(arg0.toString().length() <= 0) //check if length is equal to zero
            tv.setHintTextColor(getResources().getColor(R.color.white));
    }
});

回答2:

Simply add this in your layout for the EditText :

android:textColorHint="#FFFFFF"

回答3:

Default Colors:

android:textColorHint="@android:color/holo_blue_dark"

For Color code:

android:textColorHint="#33b5e5"

回答4:

Inside Layout Xml File We can Change Color of Hint.....

android:textColorHint="@android:color/*****"

you can replace * with color or color code.

回答5:

Seems that EditText apply the hintTextColor only if the text is empty. So simple solution will be like this

Editable text = mEditText.getText();
mEditText.setText(null);
mEditText.setHintTextColor(color);
mEditText.setText(text);

If you have multiple fields, you can extend the EditText and write a method which executes this logic and use that method instead.

回答6:

Programmatically in Java - At least API v14+

exampleEditText.setHintTextColor(getResources().getColor(R.color.your_color));

回答7:

This is like default hint color, worked for me:

editText.setHintTextColor(Color.GRAY);

回答8:

You could call editText.invalidate() after you reset the hint color. That could resolve your issue. Actually the SDK update the color in the same way.