Android EditText selectAll() doesn't works if one taps on the same field in android 4.x only

问题

I want to select all the text present in EditText field if one clicks on the same, right now i can achieve this by below code in android 2.x and 3.x but not in 4.0. If any one had the same problem please let me know how to resolve this.

@Override
public void onFocusChange(View v, boolean hasFocus) {
    switch(v.getId()) {
    case R.id.passcodetext1:
        if(hasFocus) editText1.selectAll();
        break;

    case R.id.passcodetext2:
        if(hasFocus) editText2.selectAll();
        break;

    case R.id.passcodetext3:
        if(hasFocus) editText3.selectAll();
        break;

    case R.id.passcodetext4:
        if(hasFocus) editText4.selectAll();
        break;
    }

}

回答1:

I solved this by just adding one property in layout.xml.

android:selectAllOnFocus="true"

Earlier i was not aware of this but this is really a very good solution for this kind of problems.

回答2:

try this...

 if(hasFocus) v.selectAll();
              ^^^^^^^^^^^

回答3:

See this solution: https://stackoverflow.com/a/35527348/1504248

May be you need run something like:

        Editable text = edit.getText();
        if (text.length() > 0) {
            text.replace(0, 1, text.subSequence(0, 1), 0, 1);
            edit.selectAll();
        }

inside your if(hasFocus).

来源：https://stackoverflow.com/questions/11793635/android-edittext-selectall-doesnt-works-if-one-taps-on-the-same-field-in-andr