安卓项目实现闪屏功能

方法1：在主文件中写入

1 <span style="font-size:14px;">  // 取消标题
2         this.requestWindowFeature(Window.FEATURE_NO_TITLE);
3         // 取消状态栏
4         this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
5                 WindowManager.LayoutParams.FLAG_FULLSCREEN);  </span>  

方法2：在AndroidManifest.xml配置文件中修改显示的状态

1 <span style="font-size:14px;"> <activity  android:name="com.example.walkerlogin1.WelcomeActivity"
2             android:label="@string/app_name"
3             android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
4             >
5
6          </activity></span>  

具体实现代码

 1 package com.example.walkerlogin1;
 2
 3
 4 import android.app.Activity;
 5 import android.content.Intent;
 6 import android.os.Bundle;
 7 import android.view.animation.AlphaAnimation;
 8 import android.view.animation.Animation;
 9 import android.view.animation.Animation.AnimationListener;
10 import android.widget.RelativeLayout;
11
12
13 public class WelcomeActivity extends Activity {
14
15     protected void onCreate(Bundle savedInstanceState) {
16         super.onCreate(savedInstanceState);
17              // 取消标题
18              this.requestWindowFeature(Window.FEATURE_NO_TITLE);
19         // 取消状态栏
20            this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
21                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
22         setContentView(R.layout.activity_welcome);
23         RelativeLayout layoutWelcome=(RelativeLayout) findViewById(R.id.activity_welcome);
24         AlphaAnimation alphaAnimation=new AlphaAnimation(0.1f,1.0f);
25         alphaAnimation.setDuration(3000);
26         layoutWelcome.startAnimation(alphaAnimation);
27         alphaAnimation.setAnimationListener(new AnimationListener() {
28             public void onAnimationStart(Animation animation) {
29
30             }
31
32             public void onAnimationRepeat(Animation animation) {
33
34             }
35
36             public void onAnimationEnd(Animation animation) {
37                 System.out.println("你好");
38                 Intent  intent=new Intent(WelcomeActivity.this,GuideActivity.class);
39                 startActivity(intent);
40             }
41         });
42     }
43 }  

修改配置文件：

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.example.walkerlogin1"
 4     android:versionCode="1"
 5     android:versionName="1.0" >
 6
 7     <uses-sdk
 8         android:minSdkVersion="8"
 9         android:targetSdkVersion="17" />
10
11     <application
12         android:allowBackup="true"
13         android:icon="@drawable/ic_launcher"
14         android:label="@string/app_name"
15         android:theme="@style/AppTheme" >
16
17         <activity  android:name="com.example.walkerlogin1.MainActivity"
18             android:label="@string/app_name"></activity>
19          <activity  android:name="com.example.walkerlogin1.WelcomeActivity"
20             android:label="@string/app_name"
21             android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
22             >
23              <intent-filter>
24                 <action android:name="android.intent.action.MAIN" />//取消标题栏
25
26                 <category android:name="android.intent.category.LAUNCHER" />
27             </intent-filter>
28
29          </activity>
30
31     </application>
32
33 </manifest>  

UI布局 activity_welcome.xml

1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
2     xmlns:tools="http://schemas.android.com/tools"
3     android:layout_width="match_parent"
4     android:layout_height="match_parent"
5     android:background="@drawable/welcome_bg"
6     tools:context=".WelcomeActivity"
7     android:id="@+id/activity_welcome">
8
9 </RelativeLayout>