Progress Dialog is dialog showing a progress indicator and an optional text message or view.
The methods of Progress Dialog being used in this tutorial are:
ProgressDialog.setTitle() – Used to set title of dialog box
ProgressDialog.setMessage() – Used to set dialog message being displayed
ProgressDialog.setProgressStyle() – Choose the style of indicator
ProgressDialog.dismiss() – Dismiss the progress dialog
For this example there is Two Main Activities. One is called MainActivity.java and the other MainActivity2.java
The function of this app is the user click on the ‘next’ button and the Main Activity is switched to the second activity. During the switch a Progress Dialog is displayed to signal the change in activates.
MainActivity.java
public class MainActivity extends AppCompatActivity {
Button next;
ProgressDialog progress;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
progress = new ProgressDialog(MainActivity.this);
next = (Button) findViewById(R.id.btn_main);
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.btn_main:
progress.setTitle("Progress"); // setting title
progress.setMessage("Please Wait Loading..."); // creating message
progress.setProgressStyle(ProgressDialog.STYLE_SPINNER); // style of indicator
progress.setIndeterminate(true);
progress.show();
new Thread() {
public void run() {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
Intent i = new Intent(MainActivity.this, MainActivity2.class); // Switching to Second Activity
startActivity(i);
progress.dismiss();
}
}.start();
break;
}
}
});
}
}
activity_main.xml
<androidx.constraintlayout.widget.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=".MainActivity">
<Button
android:id="@+id/btn_main"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="159dp"
android:layout_marginLeft="159dp"
android:layout_marginTop="364dp"
android:layout_marginEnd="159dp"
android:layout_marginRight="159dp"
android:text="Next"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
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