java - 不需要的重复 Activity

Question

有一段代码将 int 'a' 从主 Activity 发送到 Activity B。它还使用淡入淡出动画启动 Activity B。但是，此代码创建了 2 个相同的 Activity B，而我只需要 1 个 Activity B。如何解决此问题，使其只生成 1 个。

new Handler().postDelayed(new Runnable() {
        public void run() {
            Handler splash = new Handler();
            int a = 1;
            Intent myIntent = new Intent(MainActivity.this, Differentiate.class);
            startActivity(new Intent(MainActivity.this, Differentiate.class));
            myIntent.putExtra("HEADER", a);
            overridePendingTransition(R.anim.fade_in_switch_fast,R.anim.fade_out_switch_fast);
            startActivity(myIntent);
            finish();
        }
    }, secondsDelayed * 2000);

Answer 1

您将开始第二个 Activity 两次。从代码中删除以下行，并在使用 Intent 启动 Activity 后移动 overridePendingTransition:

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