Button

程序员文章站 2022-03-31 08:36:21

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">


    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="36dp"
        android:layout_marginLeft="36dp"
        android:text="用户名" />

    <EditText
        android:id="@+id/editTextTextPersonName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:layout_toRightOf="@id/textView"
        android:layout_alignBottom="@id/textView"
        android:layout_alignBaseline="@id/textView"
         />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/textView"
        android:layout_alignLeft="@id/textView"
        android:layout_marginTop="36dp"
        android:text="密 码" />

    <EditText
        android:id="@+id/editTextTextPersonName2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/editTextTextPersonName"
        android:layout_alignLeft="@id/editTextTextPersonName"
        android:layout_alignBottom="@id/textView2"
        android:ems="10"
        android:inputType="numberPassword"
        />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toLeftOf="@id/button2"
        android:layout_alignBottom="@id/button2"
        android:text="确定" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/editTextTextPersonName2"
        android:layout_alignRight="@id/editTextTextPersonName2"
        android:text="充填" />

    <Button
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/button2"
        android:layout_alignRight="@id/button2"
        android:onClick="onClick_Event"
        android:text="取消" />
</RelativeLayout>

package com.example.my;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private Button confirmBtn,resetBtn;
    private EditText ed1,ed2;
    private String name="";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ed1=(EditText)findViewById(R.id.editTextTextPersonName);
        ed2=(EditText)findViewById(R.id.editTextTextPersonName2);
        confirmBtn=(Button)findViewById(R.id.button);
        //第一种方式
        confirmBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View arg0) {
                name=ed1.getText().toString();
                Toast.makeText(MainActivity.this,name+",您的登录信息以提交",Toast.LENGTH_SHORT).show();
            }
        });
        //第二种方式
        resetBtn=(Button)findViewById(R.id.button2);
        Button.OnClickListener listener=new Button.OnClickListener(){

            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this,"请重置信息",Toast.LENGTH_SHORT).show();
            }
        };
        resetBtn.setOnClickListener(listener);
    }
    //第三种方式
    public void onClick_Event(View view){
        Toast.makeText(MainActivity.this,"您取消了已填写的信息",Toast.LENGTH_SHORT).show();
    }
}