Add ProgressBar in ToolBar

This example show how to add android.support.v7.widget.Toolbar to layout and add ProgressBar to the ToolBar.


New a project of empty activity in Android Studio.

Edit res/values/styles.xml to change style to “Theme.AppCompat.Light.NoActionBar”.

<resources>

<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>

</resources>

Refer to the above video, add a ToolBar to the layout, and add a ProgressBar to the ToolBar, using Android Studio’s graphical design tool.

res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.blogspot.android_er.toolbarprogressbar.MainActivity">

<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="0dp"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/toolbar"
app:layout_constraintVertical_bias="0.501" />

<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="368dp"
android:layout_height="wrap_content"
android:layout_marginLeft="0dp"
android:layout_marginRight="0dp"
android:layout_marginTop="0dp"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="?attr/actionBarTheme"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />

<ProgressBar
android:id="@+id/progressBar"
style="?android:attr/progressBarStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="8dp"
android:visibility="gone"/>

</android.support.constraint.ConstraintLayout>

MainActivity.java

package com.blogspot.android_er.toolbarprogressbar;

import android.os.AsyncTask;
import android.os.Bundle;
import android.os.SystemClock;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

TextView tvTitle;
ProgressBar myProgressBar;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

tvTitle = (TextView)findViewById(R.id.title);
myProgressBar = (ProgressBar)findViewById(R.id.progressBar);

tvTitle.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(getBaseContext(),
"ProgressBar start running",
Toast.LENGTH_LONG).show();
tvTitle.setClickable(false);
MyAsyncTask myAsyncTask = new MyAsyncTask();
myAsyncTask.execute();
}
});
}

public class MyAsyncTask extends AsyncTask<Void, Integer, Void> {

@Override
protected void onPreExecute() {
myProgressBar.setVisibility(View.VISIBLE);
myProgressBar.setProgress(0);
}

@Override
protected Void doInBackground(Void... voids) {
for(int i=0; i<100; i++){
publishProgress(i);
SystemClock.sleep(100);
}
return null;
}

@Override
protected void onProgressUpdate(Integer... values) {
myProgressBar.setProgress(values[0]);
}

@Override
protected void onPostExecute(Void aVoid) {
myProgressBar.setVisibility(View.GONE);
tvTitle.setClickable(true);
}
}
}

Result:

To replace the indeterminate ProgressBar to Horizontal Progress Bar, edit res/layout/activity_main.xml. (maybe you want to set android:visibility=”gone” as in progressBarStyle, depends on your case)

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.blogspot.android_er.toolbarprogressbar.MainActivity">

<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="0dp"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/toolbar"
app:layout_constraintVertical_bias="0.501" />

<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="368dp"
android:layout_height="wrap_content"
android:layout_marginLeft="0dp"
android:layout_marginRight="0dp"
android:layout_marginTop="0dp"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="?attr/actionBarTheme"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />

<ProgressBar
android:id="@+id/progressBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="0dp"
android:layout_marginLeft="0dp"
android:layout_marginRight="0dp"
app:layout_constraintBottom_toBottomOf="@+id/toolbar"
app:layout_constraintLeft_toLeftOf="@+id/toolbar"
app:layout_constraintRight_toRightOf="@+id/toolbar" />

</android.support.constraint.ConstraintLayout>

More examples of:
– android.support.v7.widget.Toolbar
ProgressBar

Android-er