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  • Android中简单活动窗口的切换--Android

    本例实现Android中简单Activity窗口切换:借助intent(意图)对应用操作(这里用按钮监听)等的描述,Android根据描述负责找对应的组件,完成组件的调用来实现活动的切换……案例比较简单直接附上代码了哈。

    1、建两个Activity类,分别为MainActivity.java和GuideActivity.java……

    MainActivity.java(核心文件):

    package livetelecast.thonlon.example.cn.thonlonlivetelecast;
    import android.content.Intent;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.Button;
    public class MainActivity extends AppCompatActivity {
      private Button btn_oprnActivity;
    @Override
      protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      btn_oprnActivity=(Button) findViewById(R.id.btn_openActivity);
      btn_oprnActivity.setOnClickListener(new View.OnClickListener() {
    @Override
        public void onClick(View view) {
        Intent intent=new Intent();
        intent.setClass(MainActivity.this,GuidActivity.class);
        
    startActivity(intent);
         }
      });
      }
    }

    GuideActivity.java:

    package livetelecast.thonlon.example.cn.thonlonlivetelecast;
    import android.app.Activity;
    import android.os.Bundle;
    /**
    * Created by NIUXINLONG on 2018/4/29.
    */
    public class GuidActivity extends Activity{
      protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_guide);
      
    }
    }

    2、分别建立与Activity对应的布局文件activity_main.xml、activity_guide.xml:

    activity_main.xml:

    <?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">
      <Button
      android:id="@+id/btn_openActivity"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:text="@string/btn_open"/>
    </RelativeLayout>

    activity_guide.xml:

    <?xml version="1.0" encoding="utf-8"?>
    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent">
      <android.support.v4.view.ViewPager
      android:layout_width="match_parent"
      android:layout_height="match_parent">
      </android.support.v4.view.ViewPager>
      <LinearLayout
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="bottom|center_horizontal">
        <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/point_select"
        android:padding="15dp"/>
        <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/point_normal"
        android:padding="15dp"/>
      </LinearLayout>
    </FrameLayout>

    3、配AndroidMenifest.xml:(重点是添加两activity)

    <?xml version="1.0" encoding="utf-8"?>
    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="livetelecast.thonlon.example.cn.thonlonlivetelecast">
    <application
      android:allowBackup="false"
      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=".MainActivity">
        <intent-filter>
          <action android:name="android.intent.action.MAIN" />
          <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
      </activity>
      <activity android:name=".GuidActivity"/>
    </application>
    </manifest>

     
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  • 原文地址:https://www.cnblogs.com/qikeyishu/p/8972483.html
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