82 lines
2.3 KiB
Markdown
82 lines
2.3 KiB
Markdown
# App Optimisation, Testing & Deployment
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### Check Memory Usage
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- `abd shell dumpsys meminfo <package_name>`
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- Check if memory size increased since launch
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- Number of objects that have been created
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- Database information
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- Terminology:
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- Native Heap: memory used by the process itself
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- Dalvik Heap: memory allocated by DalvikVM
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- Dalvik Other: memory used for JIT
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- Pss total: all connections to the main device memory thread
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- Private dirty: actual amount of RAM the app is using on the heap since the app started
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### Code Optimisation
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- Minimise object creation
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- Make a method static if there is no need to modify the state of an object
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- Make any constants `static final`
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- `Int` is 2x faster than `float`
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- Use enhanced for loops (for-each instead of regular for loops)
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### App Testing
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- Generally, developing tests is done before developing code
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#### Unit Tests
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- Build unit tests to verify the logic of specific code in the app
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- Local tests
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- run on the local Java VM
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- Instrumented tests
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- run based on the Android dependencies
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- Can use `mockito` or `robolectric` to isolate a unit from its dependencies
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#### UI Tests
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- Test an entire sequence of events, user interface, end-to-end testing on emulators & devices
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- Tools: `AndroidJUnitRunner` & `Espresso API` & UI Automator
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- Modify `build.gradle`
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```groovy
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dependencies{
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androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
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}
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```
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- Espresso records UI interactions and can use these to run a repeatable test automatically
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#### Monkey (stress test)
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- Runs on an emulator and generates pseudo-random streams of user events (clicks, touches, gestures and system-level events)
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```sh
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$ adb shell monkey [options] <event-count>
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$ adb shell monkey -p your.package.name -v 500
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```
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#### APK Generation
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- Use a good / unique *package name*
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- `[org/com].[company].[product].[component]`
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- Build `->` Generate Signed APK
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##### Shrink Code & Resources (Proguard)
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```groovy
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buildTypes {
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release {
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minifyEnable true
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shrinkResources true
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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}
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}
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```
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Can try `proguard-android-optimize.txt` for more code shrinking |