Androidシステムツール類の詳細

本論文の例では、Androidシステムのツール類の具体的なコードを共有しています。
システムツールクラス

public class systemUtil {

  //  ipad       
  @RequiresApi(api = Build.VERSION_CODES.KITKAT)
  public static void closeBottomBar(Activity activity){
    Window _window = activity.getWindow();
    WindowManager.LayoutParams params = _window.getAttributes();
    params.systemUiVisibility =
        View.SYSTEM_UI_FLAG_HIDE_NAVIGATION|View.SYSTEM_UI_FLAG_IMMERSIVE;
    _window.setAttributes(params);
  }

  //        
  public static void softInputMode(Activity activity){
    activity.getWindow().setSoftInputMode(
        WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE |
        WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
  }

  //      
  public static void screenLightUp(Activity activity){
    activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
  }

  //       
  public static int[] defaultDisplay(Activity activity){
    int[] pixels = new int[2];
    DisplayMetrics dm = new DisplayMetrics();
    activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
    pixels[0]=dm.widthPixels;
    pixels[1]=dm.heightPixels;
    return pixels;
  }

  //  Android    
  public static String getSystemVersion() {
    return android.os.Build.VERSION.RELEASE;
  }

  //      
  public static String getSystemModel() {
    return android.os.Build.MODEL;
  }

  //  IMEI   
  //     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
  @SuppressLint("MissingPermission")
  public static String getIMEI(Activity activity) {
    //6.0           
    if (ActivityCompat.checkSelfPermission(activity,
        Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
      ActivityCompat.requestPermissions(activity,
        new String[]{Manifest.permission.READ_PHONE_STATE},1);
    }
    TelephonyManager tm =
        (TelephonyManager) activity.getSystemService(Activity.TELEPHONY_SERVICE);
    return tm.getDeviceId();
  }

  //        
  public static String getSystemLanguage() {
    return Locale.getDefault().getLanguage();
  }

  //      
  @TargetApi(Build.VERSION_CODES.LOLLIPOP)
  public static int getBattery(Context context){
    BatteryManager batteryManager =
        (BatteryManager)context.getSystemService(BATTERY_SERVICE);
    return batteryManager.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY);
  }

  //          (GB)
  public static String getRomAvailableSize(Context context) {
    File path = Environment.getDataDirectory();
    StatFs stat = new StatFs(path.getPath());
    long blockSize = stat.getBlockSize();
    long availableBlocks = stat.getAvailableBlocks();
    return Formatter.formatFileSize(context, blockSize * availableBlocks);
  }

  //             (GB)
  public static String getRomTotalSize(Context context) {
    File path = Environment.getDataDirectory();
    StatFs stat = new StatFs(path.getPath());
    long blockSize = stat.getBlockSize();
    long totalBlocks = stat.getBlockCount();
    return Formatter.formatFileSize(context, blockSize * totalBlocks);
  }

  //  SD       
  public static String getSDTotalSize(Context context) {
    File path = Environment.getExternalStorageDirectory();
    StatFs stat = new StatFs(path.getPath());
    long blockSize = stat.getBlockSize();
    long totalBlocks = stat.getBlockCount();
    return Formatter.formatFileSize(context, blockSize * totalBlocks);
  }

  //  sd     
  private String getSDAvailableSize(Context context) {
    File path = Environment.getExternalStorageDirectory();
    StatFs stat = new StatFs(path.getPath());
    long blockSize = stat.getBlockSize();
    long availableBlocks = stat.getAvailableBlocks();
    return Formatter.formatFileSize(context, blockSize * availableBlocks);
   }

  //    
  private void restartDevices() {
    String cmd = "su -c reboot";
    try {
      Runtime.getRuntime().exec(cmd);
    } catch (IOException e) {
      Log.i("restart","    ");
    }
  }
}

システム関連権限

//      
android.permission.WRITE_EXTERNAL_STORAGE，        

//      
android.permission.READ_EXTERNAL_STORAGE，        

//      
android.permission.READ_LOGS，        

//      
android.permission.READ_SMS，      

//  
android.permission.VIBRATE，    

//    
android.permission.REBOOT，          

//      
android.permission.INSTALL_PACKAGES，        

//    
android.permission.MODIFY_AUDIO_SETTINGS，        

//  
android.permission.RECORD_AUDIO，              

//     
android.permission.FLASHLIGHT，       

//    
android.permission.INTERNET，      ，    GPRS  

//  wifi  
android.permission.CHANGE_WIFI_STATE，  wifi，  wifi  

//  WiFi  
android.permission.ACCESS_WIFI_STATE，    WiFi       WLAN     

//      
android.permission.ACCESS_NETWORK_STATE，        ，            

//    
android.permission.CAMERA，           

//    
android.permission.BLUETOOTH，              

//    
android.permission.BATTERY_STATS，               

以上が本文の全部です。皆さんの勉強に役に立つように、私たちを応援してください。