Android：实现应用开始界面

第一步：新建splash.xml文件作为应用开始的界面

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:background="#ffff66"    android:orientation="vertical" >    <TextView        android:id="@+id/csdn"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_below="@+id/cumt"        android:layout_marginTop="30dp"        android:gravity="center"        android:textColor="#0000FF"        android:text="@string/csdn"        android:textSize="33sp"        android:textStyle="italic" />    <TextView        android:id="@+id/cumt"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_alignParentTop="true"        android:layout_marginTop="80dp"        android:gravity="center"        android:text="@string/cumt"        android:textSize="44sp"        android:textColor="#E30C0C"        android:textStyle="bold" /><ProgressBar    android:id="@+id/progress"    android:layout_width="60dip"    android:layout_height="60dip"    android:layout_below="@+id/csdn"    android:layout_centerHorizontal="true"    android:layout_marginTop="41dp" /> <TextView     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_alignParentBottom="true"     android:layout_centerHorizontal="true"     android:layout_marginBottom="15dp"     android:padding="6dip"     android:text="@string/setting_about_description"     android:textSize="22sp" /></RelativeLayout>

 

第二步：新建Splash.java文件作为开始界面的Activity

package com.test.cadn;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.view.Window;public class Splash extends Activity{private final int SPLASH_LENGTH = 4000;//表示延迟的时间，这里为4s@Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);            requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.splash);                        new Handler().postDelayed(new Runnable() {                      public void run() {                          Intent mainIntent = new Intent(Splash.this,                                  MainActivity.class);                          Splash.this.startActivity(mainIntent);                          Splash.this.finish();                      }          }, SPLASH_LENGTH);}}

第三步：修改AndroidManifest.xml进行活动的注册

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.test.cadn"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="14"        android:targetSdkVersion="21" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name=".Splash"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity             android:name=".MainActivity"></activity>    </application></manifest>