See How Logging Can Be Used in Your Android Application

1. In Android Studio, on Windows, press Ctrl+N, or on a Mac, press command+O, and enter SettingsViewModel to open SettingsViewModel.kt.

2. On Windows, press Ctrl+F, or on a Mac, press command+F, and enter init to navigate to the init block.

   Note that the following code block contains two logger statements:

   Kotlin Copy

   init {
       //init from shared preference
       viewModelScope.launch(Dispatchers.Default) {
           preferencesFlow.collect { userReference ->
               logger.debug("get preference as {}", userReference.logSetting)
               _settingUIState.update { uiState ->
                   uiState.copy(level = LogPolicy.getLogLevel(userReference.logSetting))
               }
           }
       }
   
       val consentUsage = UserSecureStoreDelegate.getInstance().consentStatus(ConsentType.USAGE)
       val consentCrashReport =
           UserSecureStoreDelegate.getInstance().consentStatus(ConsentType.CRASH_REPORT)
       logger.debug(
           "init consent data : consentUsage {}, consentCrashReport {}",
           consentUsage,
           consentCrashReport
       )
   
       ... ...

   These messages will be logged when the app’s log level is set to Debug or Path and the app’s Settings menu item is opened.

1. In Android Studio, on Windows, press Ctrl+N, or on a Mac, press command+O, and enter EntitySetListActivity to open EntitySetListActivity.kt.

2. On Windows, press Ctrl+F12, or on a Mac, press command+F12, and enter onOptionsItemSelected to navigate to the onOptionsItemSelected method.

   Note that the following method contains two LOGGER statements:

   Kotlin Copy

   override fun onOptionsItemSelected(item: MenuItem): Boolean {
       LOGGER.debug("onOptionsItemSelected: " + item.title)
       return when (item.itemId) {
           R.id.menu_settings -> {
               LOGGER.debug("settings screen menu item selected.")
               Intent(this, SettingsActivity::class.java).also {
                   this.startActivity(it)
               }
               true
           }

   These messages will be logged when the app’s log level is set to Debug or Path and the app’s Settings menu item is opened.

1. Navigate to the entity list screen and open the app’s menu.

   

2. Choose Settings.

3. Select Log Level displayed in Logging on the Settings screen.

4. Set the level to Debug.

5. Navigate back to the entity list screen, then back into the Settings screen to see the effect of changing the log level.

6. Examine the Logcat (located at the bottom of the Android Studio screen, click it and you can see the logs). In the filter, add the name of the class that we are interested in seeing the log from: com.sap.wizapp.ui.odata.viewmodel.SettingsViewModel.

   Notice that the messages were logged since the log level of the app was set to Debug or Path.

   

The SDK libraries also log output based on the app’s log level.

1. Change the filter to com.sap.cloud.mobile.foundation.

2. Exit the app and you will see the logged lines from the foundation library.

   

1. Navigate to the entity list screen and open the app’s menu.

   

2. Choose Settings.

3. Select Log Level displayed in Logging on the Settings screen.

4. Set the level to Debug.

5. Navigate back to the entity list screen, then back into the Settings screen to see the effect of changing the log level.

6. Examine the Logcat (located at the bottom of the Android Studio screen, click it and you can see the logs). In the filter, add the name of the class that we are interested in seeing the log from: com.sap.wizapp.mdui.EntitySetListActivity.

   Notice that the messages were logged since the log level of the app was set to Debug or Path.

   

The SDK libraries also log output based on the app’s log level.

1. Change the filter to com.sap.cloud.mobile.foundation.

2. Press Back to exit the app and you will see the logged lines from the foundation library.

   

1. Navigate back to the Settings screen in the app, and this time tap Upload Log right below Log Level.

   A Toast message is displayed confirming that the upload succeeded.

   

2. In the Mobile Services cockpit, navigate to Mobile Applications > Native/MDK > btp.sdk.wizapp > Client Log Upload.

   

3. Select the Error Logs tab and you will see the log you just uploaded in the Error level list. If the log doesn’t appear immediately, wait for a few moments, then click Go to refresh the view.

4. You can inspect the log details in the browser by clicking on its table entry.

5. Select the Log Files tab and you will see the log files you just uploaded in the list. You can download the files by clicking Download.

   

6. Additionally, you can access the logs locally on an emulator. You can browse the file system of an Android emulator using the Device Explorer to view the log files as shown below: data > data > com.sap.wizapp (or the package name of your project) > files.

   

7. You can manage the initial log level of the application and the ability for mobile services to accept logs on the Configuration page, as shown below.

   

1. Navigate back to the Settings menu in the app, and this time tap Upload Log right below Log Level.

   A Toast message is displayed confirming that the upload succeeded.

   

2. In the Mobile Services cockpit, navigate to Mobile Applications > Native/MDK > btp.sdk.wizapp > Client Log Upload.

   

3. Select the Error Logs tab and you will see the log you just uploaded in the Error level list. If the log doesn’t appear immediately, wait for a few moments, then click Go to refresh the view.

4. You can inspect the log details in the browser by clicking on its table entry.

5. Select the Log Files tab and you will see the log files you just uploaded in the list. You can download the files by clicking Download.

   

6. Additionally, you can access the logs locally on an emulator. You can browse the file system of an Android emulator using the Device Explorer to view the log files as shown below: data > data > com.sap.wizapp (or the package name of your project) > files.

   

7. You can manage the initial log level of the application and the ability for mobile services to accept logs on the Configuration page, as shown below.