如何选择与在EditText上一次点击的文本？ [英] how to select text with a single click in the EditText?

问题描述

源代码以下code不能正常工作

 公共无效的onCreate（捆绑savedInstanceState）{            super.onCreate（savedInstanceState）;
            的setContentView（R.layout.activity_book_page）;             book_page =（EditText上）findViewById（R.id.activity_book_page_text）;
             book_page.setText（谷歌是你的朋友。TextView.BufferType.EDITABLE）;             book_page.setOnClickListener（新OnClickListener（）{                    @覆盖
                    公共无效的onClick（视图v）{
                        book_page.setSelection（9，15）;
                         //book_page.requestFocus（）;
                    }
               }）;             book_page.setOnFocusChangeListener（新OnFocusChangeListener（）{
                    @覆盖
                    公共无效onFocusChange（视图V，布尔hasFocus）{
                        如果（hasFocus）{
                            book_page.setSelection（9，15）;
                        }
                    }
                }）; ＆LT;的EditText
        机器人：ID =@ + ID / activity_book_page_text
        机器人：layout_width =FILL_PARENT
        机器人：layout_height =WRAP_CONTENT
        机器人：背景=＃00000000
        机器人：EMS =10
        安卓的inputType =textMultiLine
        机器人：selectAllOnFocus =真正的＆GT;        ＆LT; requestFocus的/＆GT;
    ＆LT; /＆的EditText GT;
 

解决方案

使用这块code在你的java文件：

  editText.setOnClickListener（新View.OnClickListener（）{    @覆盖
    公共无效的onClick（视图v）{
        editText.setSelection（0，editText.getText（）长（） -  1）;
    }
}
 

Source code below is not working

    public void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_book_page);

             book_page = (EditText) findViewById(R.id.activity_book_page_text);
             book_page.setText("Google is your friend.", TextView.BufferType.EDITABLE);

             book_page.setOnClickListener(new OnClickListener() {

                    @Override
                    public void onClick(View v) {
                        book_page.setSelection( 9, 15);
                         //book_page.requestFocus();


                    }
               });

             book_page.setOnFocusChangeListener(new OnFocusChangeListener(){
                    @Override
                    public void onFocusChange(View v, boolean hasFocus){
                        if (hasFocus){
                            book_page.setSelection( 9, 15);
                        }
                    }
                });

 <EditText
        android:id="@+id/activity_book_page_text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="#00000000"
        android:ems="10"
        android:inputType="textMultiLine"
        android:selectAllOnFocus="true" >

        <requestFocus />
    </EditText>

解决方案

Use this piece of code in your .java file:

editText.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
        editText.setSelection(0, editText.getText().length() - 1);
    }
}

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