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How to get top activity name in activity stack?
This example demonstrate about How to get top activity name in activity stack.
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
<?xml version = "1.0" encoding = "utf-8"?> <LinearLayout 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:gravity = "center" android:layout_height = "match_parent" tools:context = ".MainActivity" android:orientation = "vertical"> <TextView android:id = "@+id/text" android:textSize = "30sp" android:layout_width = "wrap_content" android:layout_height = "wrap_content" /> </LinearLayout>
In the above code, we have taken text view to show top activity name.
Step 3 − Add the following code to src/MainActivity.java
package com.example.myapplication; import android.app.ActivityManager; import android.content.Context; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.telephony.TelephonyManager; import android.view.WindowManager; import android.widget.TextView; import java.util.List; public class MainActivity extends AppCompatActivity { TextView textView; @RequiresApi(api = Build.VERSION_CODES.P) @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getWindow().setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND, WindowManager.LayoutParams.FLAG_BLUR_BEHIND); setContentView(R.layout.activity_main); textView = findViewById(R.id.text); ActivityManager result = (ActivityManager)this.getSystemService(Context.ACTIVITY_SERVICE); List<ActivityManager.RunningTaskInfo> services = result .getRunningTasks(Integer.MAX_VALUE); textView.setText("" +services.get(0).topActivity.toString()); } }
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen –
Click here to download the project code
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