Android SDK examples apidemos running Problems and Solutions

The Study of the official example is undoubtedly a quick way to learn any SDK. For details about how to create a samples Folder project for Android, see here. The following are two problems I encountered when debugging the project:

Error 1

Warning: application does not specify an API level requirement!

Solution: In the mainfest. xml file<Mainfest...> </mainfest>Add to element<Uses-SDK Android: minsdkversion = "10"/>.

Error 2

Re-installation failed due to different application signatures.
You must perform a full uninstall of the application. Warning: This will remove the Application Data!
Please execute 'adb uninstall com. example. Android. APIs 'in a shell.
Launch canceled!

Solution: According to the error message, run ADB uninstall COM. example. android. APIS (the ADB command is in the platform-tools directory under the Android's SDK directory). Note that this command is executed in the simulator running.