Launch to "Nothing".">
OK after many frustrating hours, I discovered that somehow "calltally.info" got added as a recognized file type. No idea how, but as the default name for all activities added with Add->New Activity wizard is "MainActivity", android studio always treated "calltally.info" as jsp. So every time I added a new activity, it could never find the main activity!
For more information on changing maximum heap size, see Maximum heap size. Reduce the maximum heap size available to Android Studio: Based on what components can be added to the folder you clicked on, you then see a list of template types like those shown in figure 1.
Update Gradle and the Android plugin for Gradle: Update to the latest versions of Gradle and the Android plugin for Gradle to ensure you are taking advantage of the latest improvements for performance.Android Studio: default activity not found error
Enable Power Save Mode: Enabling Power Save Mode turns off a number of memory- and battery-intensive background operations, including error highlighting and on-the-fly inspections, autopopup code completion, and automatic incremental background compilation. Disable unnecessary lint checks: To change which lint checks Android Studio runs on your code, proceed as follows: In the left pane, expand the Editor section and click Inspections.To change which lint checks Android Studio runs on your code, proceed as follows: For example, the following log options gather information about a specific platform: To turn on Offline Mode, proceed as follows: The onCreate method is one of many methods that are fi red when an activity is loaded.
Click the checkboxes to select or deselect lint checks as appropriate for your project. Click Apply or OK to save your changes.The list of templates provided in Android Studio is constantly growing. Under Global Gradle settings, check the Offline work checkbox.
Debug on a physical device: Debugging on an emulator uses more memory than debugging on a physical device, so you can improve overall performance for Android Studio by debugging on a physical device.
Include only necessary Google Play services as dependencies: Including Google Play Services as dependencies in your project increases the amount of memory necessary.
Only include necessary dependencies to improve memory usage and performance. Turn on Offline Mode for Gradle: If you have limited bandwitch, turn on Offline Mode to prevent Gradle from attempting to download missing dependencies during your build.
When Offline Mode is on, Gradle will issue a build failure if you are missing any dependencies, instead of attempting to download them. To turn on Offline Mode, proceed as follows: In the left pane, expand Build, Execution, Deployment and then click Gradle. Under Global Gradle settings, check the Offline work checkbox.
Click Apply or OK for your changes to take effect. Reduce the maximum heap size available for Gradle: Gradle's default maximium heap size is 1, MB. Reduce the value by overriding the org. Make sure to gradually decrease this value and note changes in performance.
Allocating too lttle memory may also decrease performance. Android Studio can compile independent modules in parallel, but if you have a low-memory system you should not turn on this feature.
To check this setting, proceed as follows: In the left pane, expand Build, Execution, Deployment and then click Compiler. Ensure that the Compile independent modules in parallel option is unchecked.Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site.
If you have made a change, click Apply or OK for your change to take effect. Configure your project for Instant Run Instant Run is a behavior for the Run and Debug commands that significantly reduces the time between updates to your app.
Although your first build may take longer to complete, Instant Run pushes subsequent updates to your app without building a new APK, so changes are visible much more quickly.Исправление ошибки error default activity not found
You can improve build performance with Instant Run by modifying a few settings for your project. For more information about configuring your project for Instant Run, read Configure and optimize your project for Instant Run.
To use the bundled JDK, proceed as follows: By default, the Java language version used to compile your project is based on your project's compileSdkVersion because different versions of Android support different versions of Java.
Set proxy settings Proxies serve as intermediary connection points between HTTP clients and web servers that add security and privacy to internet connections. When running the Android plugin for Gradle from the command line or on machines where Android Studio is not installed, such as continuous integration servers, set the proxy settings in the Gradle build file.
After the initial installation of the Android Studio bundle, Android Studio can run with internet access or off-line.
However, Android Studio requires an internet connection for Setup Wizard synchronization, 3rd-party library access, access to remote repositories, Gradle initialization and synchronization, and Android Studio version updates.
Select Auto-detect proxy settings to use an automatic proxy configuration URL for the proxy settings or Manual proxy configuration to enter each of the settings yourself.Default Activity Not Found
Note that most templates depend on the Android Support Library to include user interface principles based on material design.
Add a project component Figure 1.
The list of templates provided in Android Studio is constantly growing. Android Studio groups templates by the type of component that they add, such as an Activity or an XML file, as shown in figure 1.
To add an Android project component using a template, use the Project window. Right-click on the folder in which you want to add the new component, and select New.Make sure to gradually decrease this value and note changes in performance. Select an activity template One of the most common uses of templates is adding new activities to an existing app module. To create a new idea. For more information about configuring your project for Instant Run, read Configure and optimize your project for Instant Run.
Based on what components can be added to the folder you clicked on, you then see a list of template types like those shown in figure 1. When you select the template you want to add, a corresponding wizard window appears and asks for the component's configuration information, such as its name.
After you enter the configuration information, Android Studio creates and opens the files for your new component. It also runs a Gradle build to sync your project. Select an activity template One of the most common uses of templates is adding new activities to an existing app module.
This section covers the commonly used activity templates for phone and tablet apps.