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1. Get the battery capacity of Android device The battery capacity is mainly obtained by reflecting com.android.internal.os.PowerProfile Class, calling the getBatteryCapacity method to get it. The specific methods are as follows /** * Get the capacity of the battery * * @param context ...

Selection of menu bar symbols There are many menu symbols in Android studio. Select drawable You can choose any symbol you want code implementation public class CrimeListFragment extends Fragment { public static final String SUBTITLE = "subtitle"; private RecyclerView mRecyclerView; private CrimeAdpater mCr ...

ViewGroup and View 1. View Group is a container that can hold views. It is responsible for measuring the width and height of subviews or sub controls, and determining the location of subviews or sub controls. Common methods are: onMesure(): measures the width and height of a subview or child control ...

Article directory 1, Thread form in Android 1.1 AsyncTask 1.1.1 usage 1.1.2 principle analysis: 1.2 HandlerThread 1.3 IntentService 2, Thread pool in Android 2.1 ThreadPoolExecutor 2.2 classification of thread pool 2.2.1 FixedThreadPool 2.2.2 CachedThreadPool 2.2.3 ScheduledThreadPool 2.2.4 Sin ...

mui single webview mode, the page is as follows. There are two poppickers on it, and then the page can't slide up and down. <div class="mui-content us-reimburse"> <div class="block"> <div class="us-list-title"> Application information &lt ...

When using EventBus, we first need to register EventBus: EventBus.getDefault().register(this); So let's use this code as an entry to explore the secrets of EventBus step by step! Let's first look at the getDefault() method: static volatile EventBus defaultInstance; public static EventBus getDefa ...

/Start/   This article mainly analyzes the source code of LiveData. This article uses the source code analysis of Android SDK 29.   /Definition/   LiveData is a kind of observable data storage class, which has life cycle awareness and follows the life cycle of application components (e.g. Activ ...

    Survival Status We know that there will be background killing on Android systems, and with the update of system versions, there will be an increasing trend in killing processes.The system's starting point is good because it saves memory, reduces power consumption, and avoids some rogue behav ...

Everyone is not new to Edittext. I won't say much here. I'll go straight to the topic. I'm just writing this article to record some tips for using Edittext: 1. Limit input range method 1: /** * Limit the range of input numbers */ public class RegionNumberEditText extends EditText { private Context context; private i ...

Runtime annotation is mainly implemented by reflection, while compile time annotation helps us to generate code during compilation, so compile time annotation is efficient, but it is a little more complex to implement. Runtime annotation is inefficient, but it is simple to implement. Let's first look at ...