问题
I have modify the solution. I am able to get the progress bar but the progress bar never gets hide
Here is class to create a progress bar with relative layout
public class ProgressBarHandler {
private ProgressBar mProgressBar;
private Context mContext;
private View _baseView;
private View _hideView;
public ProgressBarHandler(Context context,View baseView, View hideView) {
mContext = context;
_baseView = baseView;
_hideView = hideView;
ViewGroup layout = (ViewGroup) _baseView;//((Activity) context).findViewById(android.R.id.content).getRootView();
mProgressBar = new ProgressBar(context, null, android.R.attr.progressBarStyleLarge);
mProgressBar.setIndeterminate(true);
RelativeLayout.LayoutParams params = new
RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);
RelativeLayout rl = new RelativeLayout(context);
rl.setGravity(Gravity.CENTER);
rl.addView(mProgressBar);
layout.addView(rl, params);
hide();
}
public void show() {
mProgressBar.setVisibility(View.VISIBLE);
_hideView.setVisibility(View.INVISIBLE);
}
public void hide() {
mProgressBar.setVisibility(View.INVISIBLE);
_hideView.setVisibility(View.VISIBLE);
}
}
This is my xml file
<FrameLayout xmlns:tools="http://schemas.android.com/tools"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:descendantFocusability="beforeDescendants"
android:focusableInTouchMode="true"
android:orientation="vertical"
android:id="@+id/profile_activity">
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:id="@+id/layout_to_hide"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="@+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:expandedTitleTextAppearance="@android:color/transparent"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@mipmap/wallpaper"
android:orientation="vertical">
<com.deerwalk.androidcommon.RoundedImageView
android:id="@+id/profile_image"
android:layout_width="100dp"
app:civ_border_color="#EEEEEE"
app:civ_border_width="4dp"
app:civ_shadow="true"
app:civ_shadow_radius="10"
app:civ_shadow_color="#8BC34A"
android:layout_height="100dp"
android:layout_alignWithParentIfMissing="false"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:layout_margin="20dp"
android:src="@drawable/avatar" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_below="@+id/profile_image"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="@+id/txt_name"
android:layout_gravity="center_horizontal"
android:text=""
android:textColor="@color/white" />
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="@+id/txt_dob"
android:layout_gravity="center_horizontal"
android:text=""
android:layout_marginTop="5dp"
android:textColor="@color/white" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
</android.support.v7.widget.RecyclerView>
</android.support.design.widget.CoordinatorLayout>
</FrameLayout>
Here is the activity class which call the progress bar
public class ProfileActivity extends AppCompatActivity {
FrameLayout profile_root_layout;
CoordinatorLayout layot_to_hide;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profile);
profile_root_layout = (FrameLayout) findViewById(R.id.profile_activity);
layot_to_hide = (CoordinatorLayout) findViewById(R.id.layout_to_hide);
new userProfileTask().execute();
}
public class userProfileTask extends AsyncTask<Void, Void, Boolean> {
@Override
protected void onPreExecute() {
new ProgressBarHandler(getBaseContext(),profile_root_layout,layot_to_hide).show();
super.onPreExecute();
}
@Override
protected Boolean doInBackground(Void... params) {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Boolean aBoolean) {
new ProgressBarHandler(getBaseContext(),profile_root_layout,layot_to_hide).hide();
}
}
}
The progress bar never gets hides.Where I am doing mistake.
回答1:
Make a separate class then make a static method with the parameter on it the parameter contain Activity ... call this method on ur activity and pass the Activity name in it
回答2:
Its very simple, you can do in multiple ways. 1) You can define base activity and write your code for progress dialog and extends all activity from BaseActivity used Progressdialog. 2) You can have custom separate class and used in all activities. etc
Here is good example you can modify your code like this example. ProgressHud
Or use this too.
回答3:
I would suggest create a dialog and call in your activity class like this
dialog = new Dialog(getActivity(), android.R.style.Theme_Black);
View views = LayoutInflater.from(getActivity()).inflate(R.layout.activity_dialog, null);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.getWindow().setBackgroundDrawableResource(R.color.feed_item_bg);
dialog.setContentView(views);
dialog.show();
and in your async task onPostExecute dismiss dialog
dialog.dismiss();
回答4:
public static void getProgress(Activity activity,FrameLayout relativeLayout){
final ProgressBar pb;
int progressStatus = 0;
final Handler handler = new Handler();
pb = new ProgressBar(activity, null, android.R.attr.progressBarStyleHorizontal);
LayoutParams lp = new LayoutParams(550,LayoutParams.WRAP_CONTENT);
pb.setLayoutParams(lp);
LayoutParams params = (LayoutParams) pb.getLayoutParams();
pb.setLayoutParams(params);
pb.getProgressDrawable().setColorFilter(Color.BLUE, PorterDuff.Mode.SRC_IN);
relativeLayout.addView(pb);
new Thread(new Runnable() {
@Override
public void run() {
int progressStatus = 0;
while(progressStatus < 100){
progressStatus +=1;
try{
Thread.sleep(20);
}catch(InterruptedException e){
e.printStackTrace();
}
final int finalProgressStatus = progressStatus;
handler.post(new Runnable() {
@Override
public void run() {
pb.setProgress(finalProgressStatus);
}
});
}
}
}).start(); // Start the operation
}
回答5:
You could use a parent Activity. This activity class extends AppCompatActivity . Other Activities will extend this Activity. For example the name of this activity is AbstractActivty.
public class AbstractActivty extends AppCompatActivity{
AlertDialog alertDialogProgressBar;
public void showLoadingProgressBar(String message, boolean cancalable) {
if (isActivityPaused)
return;
AlertDialog.Builder adb = new AlertDialog.Builder(this);
View view = getLayoutInflater().inflate(R.layout.alert_dialog_progressbar_layout,null);
TextView tv = (TextView) view.findViewById(R.id.idTextViewMessage);
tv.setText(message);
adb.setView(view);
alertDialogProgressBar = adb.create();
alertDialogProgressBar.setCancelable(cancalable);
alertDialogProgressBar.show();
}
public void closeProgressBar() {
if (alertDialogProgressBar == null) {
return;
}
alertDialogProgressBar.hide();
}
}
This class have a method which could be called by any other activity that extends AbstractActivty
class MainActivty extends AbstractActivty{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// when require to show progressbar
showLoadingProgressBar("Loading....",true)
// when required to hide call
closeProgressBar();
}
}
Note in Alert Dialog we have used a custom layout "alert_dialog_progressbar_layout.xml"
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="@dimen/text_padding_l">
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guidelineVertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent=".3"
/>
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toStartOf="@+id/guidelineVertical"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"/>
<TextView
android:id="@+id/idTextViewMessage"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Loading...."
android:textColor="@color/colorPrimary"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/guidelineVertical"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
Hope this will be of help . Thank you.
来源：https://stackoverflow.com/questions/36052732/common-progress-bar-in-every-activity-android