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[英]why progress bar loading not showing actual data in fragment android?
[英]Progress Bar not showing in fragment [ANDROID]
在我的應用程序中,我正在使用此庫https://github.com/DmitryMalkovich/circular-with-floating-action-button來實現帶有浮動動作按鈕的進度條。 它正在處理活動,但是當我在片段的布局進度欄中包含此布局時,它不會顯示。 這是我的代碼,可以提供更好的解釋。請指導我哪里出錯了,我們將不勝感激。 customlayout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone"
>
<com.dmitrymalkovich.android.ProgressFloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:clickable="true">
<ProgressBar
android:id="@+id/progressbar"
style="@style/Widget.AppCompat.ProgressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"/>
<android.support.design.widget.FloatingActionButton
android:id="@+id/floatingActionButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/transparent_logo"
app:backgroundTint="@color/bg_color"
android:layout_centerInParent="true"
/>
</com.dmitrymalkovich.android.ProgressFloatingActionButton>
</RelativeLayout>
fragmentlayout.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/layoutcontainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="bg_color"
>
<include
layout="@layout/customlayout"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<WebView
android:id="@+id/webview"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<include
layout="@layout/otherlayout
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
當我從服務中獲取數據時,我在運行時隱藏並顯示customlayout.xml的父級布局,在服務調用之前,我使用View.VISIBLE顯示它,而在服務調用之后,我使用View.GONE隱藏它
更新的 Java代碼
分段
public class MyFragment extends Fragment {
private Context context;
//root view of layout
View rootView;
private static final String ARG_PARAM1 = "Class";
private String screen_title;
private String URL = "";
public MyFragment() {
// Required empty public constructor
}
public static MyFragment newInstance(String param1) {
MyFragmentfragment = new MyFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
context = getActivity();
if (getArguments() != null) {
screen_title = getArguments().getString(ARG_PARAM1);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
rootView = inflater.inflate(R.layout.fragmentlayout, container, false);
//find views by ids
getData();
return rootView;
}
private void getData() {
CustomClass.getInstance(context, rootView).show();
//service call
//on getting response from serivce (have implemented a listener here)
CustomClass.getInstance(context, rootView).hide(); }
@Override
public void onAttach(Context context) {
super.onAttach(context);
}
@Override
public void onDetach() {
super.onDetach();
}
CustomClass
public class CustomClass {
private ProgressBar mProgressBar;
private FloatingActionButton mFab;
private RelativeLayout parentLayout;
private LayoutInflater inflater;
private static CustomClass custom;
private CustomClass (Context context) {
findViewsById(context);
}
private CustomClass (View view) {
findViewsById(view);
}
public static CustomClass getInstance(Context context, View view) {
custom = new CustomClass (view);
custom.setPColor(context);
return custom;
}
public static CustomClass getInstance(Context context) {
custom = new CustomClass (context);
custom.setPColor(context);
return custom;
}
private void setPColor(Context context) {
if (mProgressBar != null)
mProgressBar.getIndeterminateDrawable().setColorFilter(ContextCompat.getColor(context, R.color.bluecolor), android.graphics.PorterDuff.Mode.MULTIPLY);
}
private void findViewsById(View view) {
if (view != null) {
mProgressBar = (ProgressBar) view.findViewById(R.id.custom_progressbar);
mFab = (FloatingActionButton) view.findViewById(R.id.custom_floatingActionButton);
parentLayout = (RelativeLayout) view.findViewById(R.id.rl_progress_fab_container);
}
}
private void findViewsById(Context context) {
Activity activity = (Activity) context;
if (activity != null) {
mProgressBar = (ProgressBar) activity.findViewById(R.id.custom_progressbar);
mFab = (FloatingActionButton) activity.findViewById(R.id.custom_floatingActionButton);
parentLayout = (RelativeLayout) activity.findViewById(R.id.rl_progress_fab_container);
}
}
public void show() {
if (custom.parentLayout != null)
custom.parentLayout.setVisibility(View.VISIBLE);
}
public void hide() {
if (custom.parentLayout != null)
custom.parentLayout.setVisibility(View.GONE);
}
在父布局的底部進行自定義布局。 因此該布局的z索引位於頂部,並且您可以看到它並消失了。
您需要將CoordinatorLayout與FAB一起使用。
只需將您的FAB放入CoordinatorLayout
。
如您所見,庫示例代碼建議也使用它。
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.dmitrymalkovich.android.progressfabsample.ScrollingActivity">
<android.support.design.widget.AppBarLayout
android:id="@+id/app_bar"
android:layout_width="match_parent"
android:layout_height="@dimen/app_bar_height"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<com.dmitrymalkovich.android.ProgressFloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/fab_margin"
android:clickable="true"
app:layout_anchor="@id/app_bar"
app:layout_anchorGravity="bottom|end">
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_backup_black_24dp"
app:backgroundTint="@color/colorFab" />
<ProgressBar
style="@style/Widget.AppCompat.ProgressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</com.dmitrymalkovich.android.ProgressFloatingActionButton>
<com.dmitrymalkovich.android.ProgressFloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
android:clickable="true">
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_backup_black_24dp"
app:backgroundTint="@color/colorFab" />
<ProgressBar
style="@style/Widget.AppCompat.ProgressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</com.dmitrymalkovich.android.ProgressFloatingActionButton>
嘗試這個:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
rootView = inflater.inflate(R.layout.fragmentlayout, container, false);
//find views by ids
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
getData();
}
});
return rootView;
}
要么
private void getData() {
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
CustomClass.getInstance(context, rootView).show();
CustomClass.getInstance(context, rootView).hide();
}
});
}
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