第三次做業：設計仿QQ登陸界面

所需截圖：

相關代碼：

 一：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android=" http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@mipmap/p1">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="100dp"
        android:orientation="vertical"
        android:padding="30dp">
        <TextView
            android:id="@+id/text1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:drawableLeft="@mipmap/p2"
            android:text="QQ"
            android:layout_marginLeft="100dp"
            android:textSize="40sp" />
        <EditText
            android:id="@+id/edt1"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginTop="35dp"
            android:hint="QQ號/郵箱/手機號"
            android:textSize="30dp"/>
        <EditText
            android:id="@+id/edt2"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:hint="密碼"
            android:password="true"
            android:textSize="30dp"/>
        <Button
            android:id="@+id/btn1"
            android:layout_width="match_parent"
            android:layout_margin="10dp"
            android:layout_height="wrap_content"
            android:text="登陸"
            android:textSize="35sp"
            android:background="#87CEFF"
            android:onClick="click"
            />
    </LinearLayout>
</RelativeLayout>

 

 

二：

 package com.example.myapplication; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.View.OnClickListener; import android.view.View; import android.widget.EditText; import android.widget.Button; import android.widget.Toast; public class MainActivity extends AppCompatActivity {     private Button btn1;     EditText account = null;     EditText code = null;     EditText t1;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         t1=(EditText) findViewById(R.id.edt1);         account = (EditText) findViewById(R.id.edt1);         code = (EditText) findViewById(R.id.edt2);         btn1=(Button) findViewById(R.id.btn1);         btn1.setOnClickListener(new OnClickListener() {             @Override             public void onClick(View view) {                 String username = ((EditText) findViewById(R.id.edt1)).getText().toString();                 String pwd = ((EditText) findViewById(R.id.edt2)).getText().toString();                 if (username.equals("123456") && pwd.equals("123456")) {                     Toast.makeText(MainActivity.this,"登錄成功",Toast.LENGTH_SHORT).show();                 } else {                     t1.setText("帳號或密碼錯誤請從新輸入");                     Toast.makeText(MainActivity.this,"登錄失敗",Toast.LENGTH_SHORT).show();                 }             }         });     } }