Android - ProgressBar setVisibility to GONE 不起作用
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Android - ProgressBar setVisibility to GONE not working
提问by j.grima
I've been adding a ProgressBarto the fragments in my app. I've set it up to the two main fragments (used as tabs) as follows:
我一直在向ProgressBar我的应用程序中的片段添加一个。我已将其设置为两个主要片段（用作选项卡），如下所示：
ProgressBarin activity_main.xml:
ProgressBar在activity_main.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ProgressBar
android:id="@+id/progressBar1"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
</RelativeLayout>
Setting ProgressBarVISIBLEand GONE:
设置ProgressBarVISIBLE和GONE：
spinner = (ProgressBar)getActivity().findViewById(R.id.progressBar1);
spinner.setVisibility(View.VISIBLE);
spinner.setVisibility(View.GONE);
This works without any problems. I've tried to add another ProgressBarto another fragment which has a WebView:
这没有任何问题。我试图将另一个添加ProgressBar到另一个片段中，该片段具有WebView：
ProgressBarin fragment_article.xml:
ProgressBar在fragment_article.xml：
<RelativeLayout xmlns: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="info.androidhive.slidingmenu.ArticleFragment$PlaceholderFragment" >
<WebView android:id="@+id/webPage"
android:layout_height="wrap_content"
android:layout_width="wrap_content"/>
<ProgressBar
android:id="@+id/progressBar1"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
</RelativeLayout>
Setting Visibility:
设置可见性：
spinner = (ProgressBar)getActivity().findViewById(R.id.progressBar1);
spinner.setVisibility(View.VISIBLE);
spinner.setVisibility(View.GONE);
Setting the visibility the same way as the previous code but for some reason this is not setting the ProgressBarto GONE. Not sure what's wrong.
设置知名度方式与前面的代码相同的，但由于某种原因，这是不设置ProgressBar到GONE。不知道出了什么问题。
I've tried using clearAnimationas suggested here Android, setVisbility to gone not working in RelativeLayoutbut still nothing.
我试过clearAnimation按照这里的建议使用Android，setVisbility 在 RelativeLayout 中不起作用，但仍然没有。
spinner.clearAnimation();
spinner.setVisibility(View.GONE);
采纳答案by Illegal Argument
Check this code:
检查此代码：
spinner = (ProgressBar)getActivity().findViewById(R.id.progressBar1);
If you are using fragments it should be like this:
如果您使用片段，它应该是这样的：
spinner = (ProgressBar)viewIinflated.findViewById(R.id.progressBar1);//same case with dialogs
If you are using activity then:
如果您正在使用活动，则：
spinner = (ProgressBar)findViewById(R.id.progressBar1);
回答by KevinRyu
I had a same issue (progressBar.setVisibility() was not working).
我有同样的问题（progressBar.setVisibility() 不起作用）。
As @Illegal Argument said,
正如@Illegal Argument 所说，
// in Activity
ProgressBar mProgressBar = (ProgressBar)findViewById(R.id.progressBar1);
mProgressBar.setVisibility(View.GONE);
should be working, if that code runs on uiThread(mainThread).
如果该代码在 uiThread(mainThread) 上运行，则应该可以正常工作。
My problem was that I was trying to run the code not on uiThread. So I solved the issue by changing code from
我的问题是我试图在 uiThread 上运行代码。所以我通过更改代码解决了这个问题
mProgressBar.setVisibility(View.GONE);
to
到
runOnUiThread(new Runnable() {
@Override
public void run() {
mProgressBar.setVisibility(View.GONE);
}
});
回答by Christopher Francisco
It's probably due the fact that View.GONEwill prevent the Viewfrom being drawn to the screen, while another Viewandroid:layout_align[POSITION]component may be defined to that View, so their position can't be calculated.
这可能是因为这View.GONE会阻止View被绘制到屏幕上，而另一个Viewandroid:layout_align[POSITION]组件可能被定义为View，因此无法计算它们的位置。
View.INVISIBLEwill work cause it just make it invisible, but the Viewis still there and other Viewcan calculate their position if the align is set to it
View.INVISIBLE会起作用，因为它只是使它不可见，但是如果对齐设置为它，它View仍然存在，其他人View可以计算它们的位置
回答by Александр Крылов
This work for me:
这对我有用：
rootView.findViewById(R.id.progress_bar).setVisibility(View.GONE);
回答by Desmond Hsu
progressBar.setVisibility(ProgressBar.VISIBLE);
progressBar.setVisibility(ProgressBar.VISIBLE);
