android中EditText光标问题

如图所示，点击EditText，EditText获得焦点，显示删除按钮；点击界面其他位置，EditText失去焦点

点击界面其他位置，EditText失去焦点，mLayout是整个布局
  mLayout.setOnTouchListener(new View.OnTouchListener(){
            
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                mLayout.setFocusable(true);
                mLayout.setFocusableInTouchMode(true);
                mLayout.requestFocus();
                return false;
            }
        });
EditText获取焦点事件
        mNumET.setOnFocusChangeListener(new View.OnFocusChangeListener(){
            
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (hasFocus) {
                    if (!TextUtils.isEmpty(mNumET.getText())) {
                        mDeleteButton.setVisibility(View.VISIBLE);
                    }
                }else {
                    mDeleteButton.setVisibility(View.GONE);
                }
                
            }
        });

  <EditText
            android:id="@+id/et_num"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginLeft="18dp"
            android:layout_marginRight="18dp"
            android:layout_toLeftOf="@id/btn_delete"
            android:background="@null"
            android:inputType="number"
            android:maxLength="11"
            android:paddingLeft="1dp"
            android:text="13416359156"
            android:textColor="#000000"
            android:textCursorDrawable="@drawable/cursor_drawable"
            android:textSize="17dp" />

cursor_drawable设置为：

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@android:color/black" />
    <size android:width="1px"/>
</shape>

注意 android:textCursorDrawable="@drawable/cursor_drawable"，如果用android:textCursorDrawable="@null"可能会出现双光标

如果EditText默认不获取焦点，则需要将其parent布局设置为

  <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="46dp"
        android:focusable="true"
        android:focusableInTouchMode="true"
        android:background="#FFFFFF" >