Android开发之splash界面下详解及实例
现在刚下载的很多APP应用第一次打开都会在进入主界面之前有导航页,用来展示公司logo,或者推广自身这款APP。先上效果图:
首先解释一下:支持进入首页只能往右滑动,中间可以左右滑动,最后一张只能向前滑动,点击立即体验会进入主界面,点击跳过也会进入到主界面。接下来上代码。
1,在app/build.gradle中的闭包中加入:
compile 'cn.bingoogolapple:bga-banner:2.1.6@aar' compile 'com.android.support:support-v4:24.1.0'
2,布局文件:activity_splash.xml。
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout 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:id="@+id/activity_splash" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.gyq.cloudreader.SplashActivity"> <cn.bingoogolapple.bgabanner.BGAGuideLinkageLayout style="@style/MatchMatch"> <cn.bingoogolapple.bgabanner.BGABanner android:id="@+id/banner_guide_background" style="@style/MatchMatch" app:banner_pageChangeDuration="1000" app:banner_pointAutoPlayAble="false" app:banner_pointContainerBackground="@android:color/transparent" app:banner_pointDrawable="@drawable/bga_banner_selector_point_hollow" app:banner_pointTopBottomMargin="15dp" app:banner_transitionEffect="fade"/> <cn.bingoogolapple.bgabanner.BGABanner android:id="@+id/banner_guide_foreground" style="@style/MatchMatch" app:banner_pageChangeDuration="1000" app:banner_pointAutoPlayAble="false" app:banner_pointContainerBackground="@android:color/transparent" app:banner_pointDrawable="@drawable/bga_banner_selector_point_hollow" app:banner_pointTopBottomMargin="15dp" app:banner_transitionEffect="alpha"/> </cn.bingoogolapple.bgabanner.BGAGuideLinkageLayout> <TextView android:id="@+id/tv_guide_skip" style="@style/WrapWrap" android:layout_alignParentRight="true" android:layout_marginRight="8dp" android:layout_marginTop="8dp" android:clickable="true" android:padding="4dp" android:text="跳过 >" android:textColor="@android:color/white" android:textSize="16sp"/> <Button android:id="@+id/btn_guide_enter" style="@style/WrapWrap" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:layout_marginBottom="60dp" android:background="@drawable/selector_btn_test" android:padding="10dp" android:text="立即体验" android:textColor="@android:color/white" android:textSize="20sp" android:visibility="gone" tools:visibility="visible"/> </RelativeLayout>
3,逻辑代码,SplashActivity.java
package com.gyq.cloudreader; import android.content.Intent; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import cn.bingoogolapple.bgabanner.BGABanner; /** * 引导界面 */ public class SplashActivity extends AppCompatActivity { private BGABanner mBackgroundBanner; private BGABanner mForegroundBanner; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_splash); initView(); initListener(); processLogic(); } private void initView() { mBackgroundBanner = (BGABanner)findViewById(R.id.banner_guide_background); mForegroundBanner = (BGABanner)findViewById(R.id.banner_guide_foreground); } private void initListener() { mForegroundBanner.setEnterSkipViewIdAndDelegate(R.id.btn_guide_enter, R.id.tv_guide_skip, new BGABanner.GuideDelegate() { @Override public void onClickEnterOrSkip() { startActivity(new Intent(SplashActivity.this, MainActivity.class)); finish(); } }); } private void processLogic() { //设置数据源 mBackgroundBanner.setData(R.drawable.uoko_guide_background_1,R.drawable.uoko_guide_background_2,R.drawable.uoko_guide_background_3); mForegroundBanner.setData(R.drawable.uoko_guide_foreground_1,R.drawable.uoko_guide_foreground_2,R.drawable.uoko_guide_foreground_3); } @Override protected void onResume() { super.onResume(); // 如果开发者的引导页主题是透明的,需要在界面可见时给背景 Banner 设置一个白色背景,避免滑动过程中两个 Banner 都设置透明度后能看到 Launcher mBackgroundBanner.setBackgroundResource(android.R.color.white); } }
小结:记得以前写一个这样的引导页,还需要自己手写半天,现在有开源啦!看上面的代码我想你应该已经知道了这个就是用的BGABanner来实现的。不过还有点小细节。
1,布局文件中的style=”@style/WrapWrap”,我们需要在values文件夹下新建一个styles_base.xml。
<?xml version="1.0" encoding="utf-8"?> <resources xmlns:android="http://schemas.android.com/apk/res/android"> <style name="WrapMatch"> <item name="android:layout_width">wrap_content</item> <item name="android:layout_height">match_parent</item> </style> <style name="MatchWrap"> <item name="android:layout_width">match_parent</item> <item name="android:layout_height">wrap_content</item> </style> <style name="WrapWrap"> <item name="android:layout_width">wrap_content</item> <item name="android:layout_height">wrap_content</item> </style> <style name="MatchMatch"> <item name="android:layout_width">match_parent</item> <item name="android:layout_height">match_parent</item> </style> <style name="MatchAuto"> <item name="android:layout_width">match_parent</item> <item name="android:layout_weight">1</item> <item name="android:layout_height">0dp</item> </style> <style name="AutoMatch"> <item name="android:layout_width">0dp</item> <item name="android:layout_weight">1</item> <item name="android:layout_height">match_parent</item> </style> <style name="WrapAuto"> <item name="android:layout_width">wrap_content</item> <item name="android:layout_weight">1</item> <item name="android:layout_height">0dp</item> </style> <style name="AutoWrap"> <item name="android:layout_width">0dp</item> <item name="android:layout_weight">1</item> <item name="android:layout_height">wrap_content</item> </style> <style name="WrapMatch.Vertical"> <item name="android:orientation">vertical</item> </style> <style name="WrapMatch.Horizontal"> <item name="android:orientation">horizontal</item> </style> <style name="MatchWrap.Vertical"> <item name="android:orientation">vertical</item> </style> <style name="MatchWrap.Horizontal"> <item name="android:orientation">horizontal</item> </style> <style name="WrapWrap.Vertical"> <item name="android:orientation">vertical</item> </style> <style name="WrapWrap.Horizontal"> <item name="android:orientation">horizontal</item> </style> <style name="MatchMatch.Vertical"> <item name="android:orientation">vertical</item> </style> <style name="MatchMatch.Horizontal"> <item name="android:orientation">horizontal</item> </style> <style name="MatchAuto.Vertical"> <item name="android:orientation">vertical</item> </style> <style name="MatchAuto.Horizontal"> <item name="android:orientation">horizontal</item> </style> <style name="AutoMatch.Vertical"> <item name="android:orientation">vertical</item> </style> <style name="AutoMatch.Horizontal"> <item name="android:orientation">horizontal</item> </style> <style name="WrapAuto.Vertical"> <item name="android:orientation">vertical</item> </style> <style name="WrapAuto.Horizontal"> <item name="android:orientation">horizontal</item> </style> <style name="AutoWrap.Vertical"> <item name="android:orientation">vertical</item> </style> <style name="AutoWrap.Horizontal"> <item name="android:orientation">horizontal</item> </style> <style name="MatchOne"> <item name="android:layout_width">match_parent</item> <item name="android:layout_height">1px</item> </style> <style name="OneMatch"> <item name="android:layout_width">1px</item> <item name="android:layout_height">match_parent</item> </style> </resources>
还有styles.xml文件中添加如下代码,这样可以整个屏幕显示:
<resources> <!-- Base application theme. --> <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"> <!-- Customize your theme here. --> <item name="colorPrimary">@color/colorPrimary</item> <item name="colorPrimaryDark">@color/colorPrimaryDark</item> <item name="colorAccent">@color/colorAccent</item> </style> <!--避免第一次进来白屏或黑屏--> <style name="AppTheme.Splash"> <item name="windowActionBar">false</item> <item name="windowNoTitle">true</item> <item name="android:windowBackground">@android:color/transparent</item> <item name="android:colorBackgroundCacheHint">@null</item> <item name="android:windowIsTranslucent">true</item> <item name="android:windowFullscreen">true</item> <item name="android:windowContentOverlay">@null</item> </style> </resources>
最后清单文件,注册SplashActivity是写如下代码。
<activity android:name=".SplashActivity" android:label="@string/app_name" android:screenOrientation="portrait" android:theme="@style/AppTheme.Splash"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity>
感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!
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