Example usage for android.content Context getSystemService

Introduction

In this page you can find the example usage for android.content Context getSystemService.

Prototype

@SuppressWarnings("unchecked")
public final @Nullable <T> T getSystemService(@NonNull Class<T> serviceClass)

Source Link

Document

Return the handle to a system-level service by class.

Usage

From source file:Main.java

public static long getTotalMem(Context context) {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    ActivityManager.MemoryInfo memoryInfo = new ActivityManager.MemoryInfo();
    am.getMemoryInfo(memoryInfo);// www . j  a  va  2s .  c  om
    return memoryInfo.totalMem;
}

From source file:Main.java

public static String getIMEI(Context context) {
    TelephonyManager ts = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
    return ts.getDeviceId();
}

From source file:Main.java

public static int getSimState(Context context) {
    TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
    return tm.getSimState();
}

From source file:Main.java

public static int getScreenWidth(Context context) {
    WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    DisplayMetrics metrics = new DisplayMetrics();
    wm.getDefaultDisplay().getMetrics(metrics);
    return metrics.widthPixels;
}

From source file:Main.java

public static int getNetworkType(Context context) {
    TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
    return tm.getNetworkType();
}

From source file:Main.java

public static int getVolumeMax(Context context) {
    AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
    return audioManager.getStreamMaxVolume(AudioManager.STREAM_VOICE_CALL);
}

From source file:Main.java

public static Point getScreenSize(Context context) {
    WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    Display display = wm.getDefaultDisplay();
    Point size = new Point();
    display.getSize(size);/* w ww. ja  v a  2  s  .  co  m*/
    return size;
}

From source file:Main.java

public static int getRunningProcess(Context context) {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningAppProcessInfo> lists = am.getRunningAppProcesses();
    return lists.size();
}

From source file:Main.java

public static String getSimSerialNumber(Context context) {
    TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
    return tm.getSimSerialNumber();
}

From source file:Main.java

public static boolean isTelephonyEnabled(Context context) {
    TelephonyManager tm = (TelephonyManager) context.getSystemService(context.TELEPHONY_SERVICE);
    return tm != null && tm.getSimState() == TelephonyManager.SIM_STATE_READY;
}