Android Studio对话框登录。。。
16lz
2021-01-23
1.MainActivity
package com.example.flyyu.second2;import android.app.AlertDialog;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends AppCompatActivity implements View.OnClickListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } AlertDialog dialog; @Override public void onClick(View v) { AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this); LayoutInflater inflater = MainActivity.this.getLayoutInflater(); final View view1 = inflater.inflate(R.layout.layout, null); view1.findViewById(R.id.btn_ok).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { final EditText edittxt_name = (EditText) view1.findViewById(R.id.editText); final EditText edittxt_password = (EditText) view1.findViewById(R.id.editText2); if (edittxt_name.getText().toString().equals("admin") && edittxt_password.getText().toString().equals("123456")) { dialog.cancel(); Toast.makeText(MainActivity.this, "登录成功", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(MainActivity.this, "错误的用户名或密码", Toast.LENGTH_SHORT).show(); } } }); view1.findViewById(R.id.btn_cancle).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { dialog.cancel(); } }); dialog = builder.setCancelable(false).setView(view1).show(); }}2.activity_main
<?xml version="1.0" encoding="utf-8"?><android.support.constraint.ConstraintLayout 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="com.example.flyyu.second2.MainActivity"> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="onClick" android:text="登录" app:layout_constraintTop_toTopOf="parent" android:layout_marginTop="8dp" android:layout_marginLeft="16dp" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintBottom_toBottomOf="parent" android:layout_marginBottom="8dp" app:layout_constraintVertical_bias="0.498" android:layout_marginRight="8dp" app:layout_constraintRight_toRightOf="parent" /></android.support.constraint.ConstraintLayout>3.layout
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageView android:id="@+id/imageView" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="1" app:srcCompat="@mipmap/ic_launcher" /> <TextView android:id="@+id/textView1" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="1" android:text=" 用户登录" android:textAlignment="viewStart" android:textColor="@android:color/holo_orange_light" android:textSize="24sp" /> </LinearLayout> <TextView android:id="@+id/textView2" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=" 请输入用户名和密码" android:textSize="18sp" /> <TextView android:id="@+id/textView3" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="用户名:" android:textSize="18sp" /> <EditText android:id="@+id/editText" android:layout_width="match_parent" android:layout_height="wrap_content" android:ems="10" android:inputType="text" /> <TextView android:id="@+id/textView4" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="密码：" android:textSize="18sp" /> <EditText android:id="@+id/editText2" android:layout_width="match_parent" android:layout_height="wrap_content" android:ems="10" android:inputType="numberPassword" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <Button android:id="@+id/btn_cancle" android:layout_width="191dp" android:layout_height="wrap_content" android:text="取消" /> <Button android:id="@+id/btn_ok" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="确定" /> </LinearLayout></LinearLayout>更多相关文章
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