Android学习笔记 3. EditText

Android学习笔记

Android基础开发——控件

3. EditText

3.1 主要属性

3.2 属性演示

3.3 结合按钮获得输入框的值

package com.dingjiaxiong.myedittext;

import androidx.appcompat.app.AppCompatActivity;

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

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        EditText username = findViewById(R.id.username);
        EditText password = findViewById(R.id.password);

        Button button = findViewById(R.id.login_btn);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                System.out.println("用户名：" + username.getText().toString() + "，密码：" + password.getText().toString());
            }
        });

    }
}
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:orientation="vertical"
    >

    <EditText
        android:id="@+id/username"
        android:layout_width="200dp"
        android:layout_height="100dp"
        android:hint="请输入用户名"
        android:textColorHint="#95a1aa"
        android:drawableLeft="@drawable/ic_baseline_person_24"
        android:inputType="text"
        android:drawablePadding="20dp"
        android:paddingLeft="30dp"
        />

    <EditText
        android:id="@+id/password"
        android:layout_width="200dp"
        android:layout_height="100dp"
        android:hint="请输入密码"
        android:textColorHint="#95a1aa"
        android:drawableLeft="@drawable/ic_baseline_vpn_key_24"
        android:inputType="numberPassword"
        android:drawablePadding="20dp"
        android:paddingLeft="30dp"
        />

    <Button
        android:id="@+id/login_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="登录"
        />
    
LinearLayout>
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