第一种:Handler延时实现，多数Demo项目简单且最常用的.

new Handler().postDelayed(new Runnable() {

@Override

public void run() {

startActivity(new Intent(WelcomeActivity.this,MainActivity.class));

finish();

}

},3000);

第二种:利用Timer和TimerTask来实现.

Timer mTimer = new Timer();

TimerTask mTimerTask = new TimerTask() {

@Override

public void run() {

startActivity(new Intent(WelcomeActivity.this,MainActivity.class));

finish();

}

};

mTimer.schedule(mTimerTask,3000);

第三种:利用动画实现页面跳转.

private void startAnimation() {

mAnimationSet = new AnimationSet(false);

//旋转动画

RotateAnimation mRotateAnimation = new RotateAnimation(

0, 360,

Animation.RELATIVE_TO_SELF, 0.5f,

Animation.RELATIVE_TO_SELF,0.5f);//设置锚点为图片的中心点

// 设置动画播放时间

mRotateAnimation.setDuration(4000);

mRotateAnimation.setFillAfter(true);//动画播放完之后，停留在当前状态

//添加到动画集

mAnimationSet.addAnimation(mRotateAnimation);

// 渐变动画

AlphaAnimation mAlphaAnimation = new AlphaAnimation(0, 1);//完全透明到不透明

mAlphaAnimation.setDuration(4000);

mAlphaAnimation.setFillAfter(true);//

mAnimationSet.addAnimation(mAlphaAnimation);

// 缩放动画

ScaleAnimation mScaleAnimation = new ScaleAnimation(

0, 1, 0, 1,

Animation.RELATIVE_TO_SELF, 0.5f,

Animation.RELATIVE_TO_SELF, 0.5f);

mScaleAnimation.setDuration(4000);

mScaleAnimation.setFillAfter(true);//

mAnimationSet.addAnimation(mScaleAnimation);

//开始播放动画

imageView.startAnimation(mAnimationSet);

}

//动画结束后自动跳转

private void initEvent() {

mAnimationSet.setAnimationListener(new Animation.AnimationListener() {

@Override

public void onAnimationStart(Animation animation) {

}

@Override

public void onAnimationEnd(Animation animation) {

}

@Override

public void onAnimationRepeat(Animation animation) {

startActivity(new Intent(BlankWelcomActivity.this,MainActivity.class));

finish();

}

});

}

第四种:利用rxjava2来实现页面跳转.复制代码

CompositeDisposable compositeDisposable = new CompositeDisposable();

/**

* 构建倒计时

* @param countTime

* @return

*/

private Observable countDown(int countTime) {

if (countTime < 0) countTime = 0;

return Observable.interval(0,1, TimeUnit.SECONDS)

.observeOn(AndroidSchedulers.mainThread())

.map(new Function() {

@Override

public Integer apply(Long aLong) throws Exception {

return countTime - aLong.intValue();

}

}).take(countTime + 1);

}

assert countDown(4) != null;

compositeDisposable.add(countDown(4).doOnSubscribe(new Consumer() {

@Override

public void accept(Disposable disposable) throws Exception {

页面显示

}

}).subscribeWith(new DisposableObserver() {

@Override

public void onNext(Integer integer) {

//实现倒计时页面显示

}

@Override

public void onError(Throwable e) {

}

@Override

public void onComplete() {

toMainPage();

}

}));

private void sendMainPage() {

if (compositeDisposable != null) {

compositeDisposable.dispose();

}

startActivity(new Intent(this,MainActivity.class));

finish();

}

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