AndroidStudio实用教程(二):多界面跳转

1.先创建一个项目，项目文件如下：

2.activity_double_window.xml代码如下

<?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=".DoubleWindow">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>

3.新建一个布局文件

4.修改好名字以后Finish

5.新建一个java类文件

6.修改好名字以后OK

7.刚创建的java类源码

package com.shawna.doublewindow;

import android.app.Activity;
import android.os.Bundle;

public class two extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout);
    }
}

8.在AndroidManifest.xml文件中增加类文件关联

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.shawna.doublewindow">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".DoubleWindow">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        //这一句 ↓
        <activity android:name=".two"></activity>
    </application>

</manifest>

9.在一开始创建的主页面上放一个按钮，按钮按下事件名称函数为play

10.DoubleWindow代码如下:

package com.shawna.doublewindow;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class DoubleWindow extends AppCompatActivity {

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

    //按钮点击事件
    public void play(View view){
        //切换页面
        Intent intent = new Intent(DoubleWindow.this,two.class);
        startActivity(intent);
    }
}

转载于:https://www.cnblogs.com/Shawna/p/9551844.html