Android start with download manager activity

The best thing about Assistant for Android is that it is a tiny little app and very light on system resources. Using Assistant for Android, you can stop any user installed app or system apps and services from auto starting at boot time. All you have to do is select the app and toggle the switch next to it. Almost everything you need is neatly arranged on the main screen so that you can access any tool you want to just a single tap.

So, in terms of usability, it gets a pretty good grade. How to use it to stop startup apps: Install Assistant for Android and open it. You can now see the user installed apps. If you swipe to the right, you will see system apps and services. Price: Assistant for Android is free and contains ads. You can remove ads with an in-app purchase. Startup Manager is a very straightforward app that is specifically designed to tackle autostarting apps. Nothing more, nothing less. In fact, it was designed by the same guys who made All-in-One Toolbox app.

While using the app, one thing I really like is that you can not only disable autostarting apps but you can also add an app to the autostart list, much like blacklisting and whitelisting. This feature is particularly useful when you want an app to auto start when you boot up your device.

As good as it is, for whatever reason, the font size in this app is pretty small and sometimes it can be hard to use. To begin recording your device screen, run the screenrecord command to record the video. Then, run the pull command to download the video from the device to the host computer.

The utility records at the native display resolution and orientation by default, with a maximum length of three minutes.

Table 5. Starting in Android 7. You might want to examine the collected profiles to understand which methods are determined to be frequently executed and which classes are used during app startup.

If you test your app across multiple test devices, it may be useful to reset your device between tests, for example, to remove user data and reset the test environment. You can perform a factory reset of a test device running Android 10 API level 29 or higher using the testharness adb shell command, as shown below.

When restoring the device using testharness , the device automatically backs up the RSA key that allows debugging through the current workstation in a persistent location. That is, after the device is reset, the workstation can continue to debug and issue adb commands to the device without manually registering a new key.

Additionally, to help make it easier and more secure to keep testing your app, using the testharness to restore a device also changes the following device settings:. If you app needs to detect and adapt to the default settings of the testharness command, you can use the ActivityManager. It includes commands such as. You can also execute SQLite commands from the command line, as shown below.

For more information, see the sqlite3 command line documentation. Content and code samples on this page are subject to the licenses described in the Content License. Android Studio. Download What's new User guide Preview. Meet Android Studio. Manage your project. Write your app. Build and run your app. Run apps on the emulator. Run apps on a hardware device. Configure your build. Optimize your build speed.

Debug your app. Test your app. Profile your app. Android Studio profilers. Profile CPU activity. Benchmark your app. Measure performance. Publish your app. Command line tools. Android Developers. It is a client-server program that includes three components: A client , which sends commands.

The client runs on your development machine. You can invoke a client from a command-line terminal by issuing an adb command. A daemon adbd , which runs commands on a device.

The daemon runs as a background process on each device. A server , which manages communication between the client and the daemon. The server runs as a background process on your development machine. How adb works When you start an adb client, the client first checks whether there is an adb server process already running.

For example: Emulator 1, console: Emulator 1, adb: Emulator 2, console: Emulator 2, adb: and so on Enable adb debugging on your device To use adb with a device connected over USB, you must enable USB debugging in the device system settings, under Developer options. On some devices, the Developer options screen might be located or named differently. To connect to your device, follow these steps: Figure 1.

Wireless ADB pairing dialog. Figure 2. Wireless adb IP and port number. Start an Activity specified by intent. Start the Service specified by intent. Force stop everything associated with package the app's package name. The Context parameter is used first because the Activity class is a subclass of Context. The Class parameter of the app component, to which the system delivers the Intent , is, in this case, the activity to start.

The putExtra method adds the value of EditText to the intent. An Intent can carry data types as key-value pairs called extras. It's a good practice to define keys for intent extras with your app's package name as a prefix. This ensures that the keys are unique, in case your app interacts with other apps. If you run the app and tap the button on the first activity, the second activity starts but is empty.

This is because the second activity uses the empty layout provided by the template. The new activity includes a blank layout file. Follow these steps to add a text view to where the message appears:. Optionally, you can make some adjustments to the text style if you expand textAppearance in the Common Attributes panel of the Attributes window, and change attributes such as textSize and textColor.

In this step, you modify the second activity to display the message that was passed by the first activity. In DisplayMessageActivity , add the following code to the onCreate method:. Each screen in your app that's not the main entry point, which are all the screens that aren't the home screen, must provide navigation that directs the user to the logical parent screen in the app's hierarchy.

To do this, add an Up button in the app bar. To add an Up button, you need to declare which activity is the logical parent in the AndroidManifest. Click Apply Changes in the toolbar to run the app. When it opens, type a message in the text field and tap Send to see the message appear in the second activity. To continue to learn the basics about Android app development, go back to Build your first app and follow the other links provided there.

Content and code samples on this page are subject to the licenses described in the Content License. App Basics. Build your first app. App resources. Resource types. App manifest file. Device compatibility. Multiple APK support. Tablets, large screens, and foldables. Build responsive UIs. Build for foldables. Getting started. Handling data. User input. Watch Face Studio. Health services. Creating watch faces. Android TV. Build TV Apps.

Build TV playback apps. Help users find content on TV. Recommend TV content. Watch Next. Build TV games. Build TV input services. TV Accessibility.

Android for Cars. Build media apps for cars. Build navigation, parking, and charging apps for cars. Android Things. Supported hardware. Advanced setup. Build apps. Create a Things app. Communicate with wireless devices.

Also add the permission to go to the internet to your app. If you implemented this example you have an Android application which can download my picture sorry for this ;- and allow you to switch to the download manager to see the finished downloads. Skip to content. Activity; import android. DownloadManager; import android. Query; import android.