Android欢迎页面2秒钟后自动跳转到主页面 _欢迎页

归志宁无五亩园，读书本意在元元。这篇文章主要讲述Android欢迎页面2秒钟后自动跳转到主页面相关的知识，希望能为你提供帮助。
页面跳转一、功能介绍打开APP先进入欢迎页面，2秒钟后自动进入主页面
二、项目结构分析三、详细代码1、WelcomeActivity.java

package com.xingyun.shoopingmail4; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import com.xingyun.shoopingmail4.activity.MainActivity; public class WelcomeActivity extends Activity {@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_welcome); //两秒钟进入主页面 new Handler().postDelayed(new Runnable() { @Override public void run() { //执行在主线程 //启动主页面 startActivity(new Intent(WelcomeActivity.this,MainActivity.class)); //关闭当前页面 finish(); } },2000); } }

2、MainActivity.java

package com.xingyun.shoopingmail4.activity; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.widget.FrameLayout; import android.widget.RadioButton; import android.widget.RadioGroup; import com.xingyun.shoopingmail4.R; import butterknife.Bind; import butterknife.ButterKnife; public class MainActivity extends AppCompatActivity {@Bind(R.id.frameLayout) FrameLayout frameLayout; @Bind(R.id.rg_main) RadioGroup rgMain; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.bind(this); rgMain.check(R.id.rb_home); } }

3、AndroidManifest.xml

< ?xml version="1.0" encoding="utf-8"?> < manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.xingyun.shoopingmail4"> < application android:allowBackup="true" android:icon="@drawable/logo" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> < activity android:name=".WelcomeActivity"> < intent-filter> < action android:name="android.intent.action.MAIN" /> < category android:name="android.intent.category.LAUNCHER" /> < /intent-filter> < /activity> < activity android:name=".activity.MainActivity"> < /activity> < /application> < /manifest>

4、activity_mainjava

< ?xml version="1.0" encoding="utf-8"?> < LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#ffffff" android:orientation="vertical" tools:context=".activity.MainActivity"> < !----> < FrameLayout android:id="@+id/frameLayout" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" /> < !----> < RadioGroup android:id="@+id/rg_main" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:background="@drawable/home_bottom_parent_bg" android:orientation="horizontal"> < !----> < RadioButton android:id="@+id/rb_home" style="@style/MainButtonStyle" android:drawableTop="@drawable/home_button_selector" android:text="首页" /> < RadioButton android:id="@+id/rb_type" style="@style/MainButtonStyle" android:drawableTop="@drawable/type_button_selector" android:text="分类" /> < !----> < RadioButton android:id="@+id/rb_community" style="@style/MainButtonStyle" android:drawableTop="@drawable/community_button_selector" android:paddingTop="10dp" android:text="发现" /> < RadioButton android:id="@+id/rb_cart" style="@style/MainButtonStyle" android:drawableTop="@drawable/cart_button_selector" android:text="购物车" /> < RadioButton android:id="@+id/rb_user" style="@style/MainButtonStyle" android:drawableTop="@drawable/user_button_selector" android:text="个人中心" /> < /RadioGroup> < /LinearLayout>

5、activity_welcome.java

< ?xml version="1.0" encoding="utf-8"?> < RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_welcome" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:background="#ffffff" tools:context=".WelcomeActivity"> < ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:src="https://www.songbingjia.com/android/@drawable/logo" /> < /RelativeLayout>

6、build.gradle

apply plugin: ‘com.android.application‘android { compileSdkVersion 28 defaultConfig { applicationId "com.xingyun.shoopingmail4" minSdkVersion 16 targetSdkVersion 28 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" javaCompileOptions { annotationProcessorOptions { includeCompileClasspath = true } } } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile(‘proguard-android.txt‘), ‘proguard-rules.pro‘ } } }dependencies { implementation fileTree(dir: ‘libs‘, include: [‘*.jar‘]) implementation ‘com.android.support:appcompat-v7:28.0.0‘ implementation ‘com.android.support.constraint:constraint-layout:1.1.3‘ testImplementation ‘junit:junit:4.12‘ androidTestImplementation ‘com.android.support.test:runner:1.0.2‘ androidTestImplementation ‘com.android.support.test.espresso:espresso-core:3.0.2‘ implementation ‘com.jakewharton:butterknife:7.0.1‘ }

四、运行结果