如何在 android 中检测聚焦的 EditText?

How can I detect focused EditText in android?(如何在 android 中检测聚焦的 EditText?)

问题描述

我的页面中有许多 EditText 元素以及两个按钮.我希望用户触摸任何一个 EditText 字段并单击任何按钮以将某个值插入到他们触摸的那个 EditText 字段中.不允许使用键盘进行输入.请帮我做这件事.

I have a number of EditText elements in my page along with two buttons. I want the user to touch on any one EditText field and click any button to insert a certain value into that very EditText field they touched. Giving input using the keypad is not allowed. Please help me to do this.

推荐答案

你可以做的一件事是声明一个全局变量evalue，它会告诉你哪个是最后选择的EditText通过使用onTouchListener，然后根据evalue的值，可以通过按钮点击将文本值设置为edittext.希望你能理解.

One thing that you can do is declare a global variable evalue which will tell you which is the last selected EditText by using onTouchListener and then based on the value of evalue, you can set the text value to the edittext by button click. hope you understood.

代码如下:

EditText e1,e2;
    Button b1,b2;
    String evalue;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        e1=(EditText)findViewById(R.id.editText1);
        e2=(EditText)findViewById(R.id.editText2);
        b1=(Button)findViewById(R.id.button1);
        b2=(Button)findViewById(R.id.button2);

        e1.setOnTouchListener(new View.OnTouchListener()
        {
            public boolean onTouch(View arg0, MotionEvent arg1)
            {
                evalue="1";
                return false;
            }
        });

        e2.setOnTouchListener(new View.OnTouchListener()
        {
            public boolean onTouch(View arg0, MotionEvent arg1)
            {
                evalue="2";
                return false;
            }
        });
        b1.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View arg0) {
                if(evalue=="1")
                {
                    e1.setText("yes");
                }
                if(evalue=="2")
                {
                    e2.setText("yes");
                }
            }
        });


        b2.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View arg0) {
                if(evalue=="1")
                {
                    e1.setText("No");
                }
                if(evalue=="2")
                {
                    e2.setText("No");
                }
            }
        });

    }

这是一个逻辑编码.. 不符合标准.. 如果您找到更好的编码.然后使用它.谢谢.

Its a logical coding.. not upto the mark.. if you find a better one. then use it. thank you.

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