Web19 de jan. de 2013 · 解决该问题的方法有很多,主要就是延后调用这些方法。可以试着在onWindowFocusChanged()里面调用这些方法,验证时可以获取到View的宽高的。 相关 … Web28 de set. de 2015 · 3 Answers. Sorted by: 58. Fragments are "drawn" via the View you return in onCreateView (). You can use the event handlers in that. Usually, if there's a command that needs to be run when the View first comes to view, you can assign it in a Runnable and attach it to the View via the post () method. getView ().post (new Runnable …
onWindowFocusChanged-阿里云开发者社区 - Alibaba Cloud
For instance, if the window gains/losses focus, it will be triggered. In case, the window gains focus, hasFocus is true and false otherwise. public void onWindowFocusChanged (boolean hasFocus) { super.onWindowFocusChanged (hasFocus); if (hasFocus) Toast.makeText (context, text, duration).show (); } Share. Web22 de jul. de 2024 · 通常认为Activity的 onResume 方法调用之后,就可以与用户交互,通过本文的分析可知,这种说法并不准确。. 只有在 Activity 的 onWindowFocusChanged (boolean hasFocus) 调用,并且参数为true的时候,才是真正可以和用户交互的时机。. Activity 和 View 的很多生命周期回调方法都 ... green dot account sign in
onWindowFocusChanged 调用时机 - 代码先锋网
Web29 de jan. de 2013 · As per the documentation for onWindowFocusChanged- As a general rule, however, a resumed activity will have window focus... unless it has displayed other dialogs or popups that take input focus, in which case the activity itself will not have focus when the other windows have it – Anukool Jan 29, 2013 at 6:05 1 Web3 de jul. de 2013 · 1.启动Activity:系统会先调用onCreate方法,然后调用onStart方法,最后调用onResume,Activity进入运行状态。 2.当前Activity被其他Activity覆盖其上或被锁屏:系统会调用onPause方法,暂停当 … Web25 de mar. de 2013 · 4. This is not true. onResume gets called before the window has focus. If you bring up your activity and then put your phone to sleep, when you turn on the power button, your activity's onResume will be called, and you will be staring at the lock screen. Only after the lock screen is dismissed does onWindowFocusChange get called. greendot acctivation .com