我如何显示一定时间间隔的视图，并在最后一个视图之后打开另一个活动？

Question

我想创建一个启动画面，我想显示一些视图（已经使它们在XML中不可见），在最后一个视图通过Java代码变为可见后，我想打开另一个活动，我知道我应该创建处理程序并runnables这样做，但是我不知道该怎么做！有人可以告诉我如何使用代码吗？这是我到目前为止所做的。

public class SplashActivity extends AppCompatActivity {
private static final int SPLASH_TIME_OUT = 3600;
private static final int VIEW_COUNT = 4;
private TextView welcome_tv1, welcome_tv2, welcome_tv3;
private ImageView logo;
private Typeface typeface;
private Handler handler  = new Handler();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.activity_splash);
    init();
    setAnimations();
    handler.postDelayed(new Runnable() {
        @Override
        public void run() {
            startActivity(new Intent(SplashActivity.this, MainActivity.class));
            finish();
        }
    }, SPLASH_TIME_OUT);
}

private void setAnimations() {
    YoYo.with(Techniques.FadeInDown)
            .duration(2500)
            .repeat(0)
            .playOn(logo);
    logo.setVisibility(View.VISIBLE);
    YoYo.with(Techniques.FadeInDown)
            .repeat(0)
            .delay(400)
            .duration(1000)
            .playOn(welcome_tv1);
    welcome_tv1.setVisibility(View.VISIBLE);
    YoYo.with(Techniques.FadeInDown)
            .repeat(0)
            .delay(1400)
            .duration(1000)
            .playOn(welcome_tv2);
    welcome_tv2.setVisibility(View.VISIBLE);
    YoYo.with(Techniques.FadeInDown)
            .repeat(0)
            .delay(2800)
            .duration(800)
            .playOn(welcome_tv3);
    welcome_tv3.setVisibility(View.VISIBLE);
}

private void init() {
    welcome_tv1 = findViewById(R.id.welcome_tv_one);
    welcome_tv2 = findViewById(R.id.welcome_tv_two);
    welcome_tv3 = findViewById(R.id.welcome_tv_three);
    typeface = Typeface.createFromAsset(getApplicationContext().getAssets(),
            "Fonts/myFont.ttf");
    logo = findViewById(R.id.logo);
    setTextViews();
}

private void setTextViews() {
    welcome_tv1.setText(getResources().getString(R.string.welcome_tv_txt));
    welcome_tv2.setText(getResources().getString(R.string.welcome_tv2_txt));
    welcome_tv3.setText(getResources().getString(R.string.welcome_tv3_txt));
    welcome_tv1.setTypeface(typeface);
    welcome_tv2.setTypeface(typeface);
    welcome_tv3.setTypeface(typeface);
}

Answer 1

如果要创建仅在用户首次启动该应用程序时运行的欢迎屏幕，则可以使用SharedPreferences来检查它是否是第一次，显示欢迎视图滑块，并在最后一个打开活动之后。