按钮没有聚焦

Question

I cannot focus the button once it is clicked.. Below is my code...

   Button lt = (Button) findViewById(R.id.btn);
    lt.setFocusable(true);
    lt.setFocusableInTouchMode(true);
    lt.requestFocusFromTouch();

This is my selector file:

<?xml version="1.0" encoding="utf-8"?>
  <selector xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:color="@android:color/black"
    android:state_pressed="true" />
    <item android:color="@android:color/black"
    android:state_focused="true" />
   <item android:color="@android:color/black"
    android:state_hovered="true" />
 <item android:color="@android:color/black"
    android:state_selected="true" 
   />
 <item android:color="@android:color/black"

And this is my xml button:

   <Button
            android:id="@+id/btn"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1.00"

            android:textColor="#cd3207"
            android:textSize="@dimen/font_size"
            android:src="@drawable/button_selector" 
            android:focusable="true"
            android:background="@drawable/selctor" />
    android:state_hovered="true" />

Answer 1

Add lt.setFocusableInTouchMode(true); to your code or try requestFocus tag in xml and let me know the result please so I can help you more.

Answer 2

You need to use selectors for this...

put an image first for initial button and later for a clicked one