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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