Android实现闪屏欢迎界面

来源:互联网 发布:未来人工智能龙头股 编辑:程序博客网 时间:2024/06/08 06:21

闪屏:在打开App时,展示,持续数秒后,自动关闭,进入另外的一个界面,SplashActivity跳转到MainActivity 

Android中有三种实现方法 

xml代码:

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
<?xmlversion="1.0"encoding="utf-8"?>
<RelativeLayoutxmlns: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"
  tools:context="com.example.administrator.test.SplashActivity">
  <ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/splash_iv"
    android:scaleType="fitXY"
    android:src="@mipmap/splash"/>
 
</RelativeLayout>

(1)利用Handler对象的postDelayed方法可以实现,传递一个Runnable对象和一个需要延时的时间即可

?
1
2
3
4
5
6
7
8
newHandler().postDelayed(newRunnable() {
     @Override
     publicvoidrun() {
       Intent intent=newIntent(SplashActivity.this,MainActivity.class);
       startActivity(intent);
       SplashActivity.this.finish();
     }
   },3000);

(2)使用动画持续时间,动画结束后进行跳转

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
@Override
  protectedvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_splash);
    iv =(ImageView)findViewById(R.id.splash_iv);
    iv.setImageResource(R.mipmap.splash);
    //设置透明度动画从无到有
    AlphaAnimation alphaAnimation=newAlphaAnimation(0.0f,1.0f);
    //设置动画持续时间
    alphaAnimation.setDuration(3000);
    //开始显示动画
    iv.startAnimation(alphaAnimation);
    //给动画设置监听,在动画结束的时候进行跳转
    alphaAnimation.setAnimationListener(newAnimation.AnimationListener() {
      @Override
      publicvoidonAnimationStart(Animation animation) {
        //动画开始时执行
        Log.e("TAG","onAnimationStart: " );
      }
 
      @Override
      publicvoidonAnimationEnd(Animation animation) {
        //动画结束时执行
        Log.e("TAG","onAnimationEnd: " );
        Intent intent=newIntent(SplashActivity.this,MainActivity.class);
        startActivity(intent);
        finish();
      }
 
      @Override
      publicvoidonAnimationRepeat(Animation animation) {
        //动画重复播放时执行
        Log.e("TAG","onAnimationRepeat: " );
      }
    });
  }

(3)利用Timer定时器实现,

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
@Override
 protectedvoidonCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_splash);
   iv =(ImageView)findViewById(R.id.splash_iv);
   iv.setImageResource(R.mipmap.splash);
   Timer timer=newTimer();
   timer.schedule(newTimerTask() {
     @Override
     publicvoidrun() {
       Intent intent=newIntent(SplashActivity.this,MainActivity.class);
       startActivity(intent);
       finish();
     }
   },3000);
 }