Android 系统工具类

摘要：系统工具类隐藏底部虚拟按键栏不自动弹出软键盘保持屏幕常亮获取屏幕分辨率获取系统版本获取设备机型获取识别号所需权限以上的系统动态添加权限获取系统当前语言获取设备电量获取设备内存可用大小获取设备内存可用的总量大小获得卡可用总量大小获得卡可用大

public class systemUtil {

    //隐藏ipad底部虚拟按键栏
    @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);
    }

    //不自动弹出软键盘
    public static void softInputMode(Activity activity){
        activity.getWindow().setSoftInputMode(
                WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE |
                WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
    }

    //保持屏幕常亮
    public static void screenLightUp(Activity activity){
        activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    }

    //获取屏幕分辨率
    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;
    }

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

    //获取设备机型
    public static String getSystemModel() {
        return android.os.Build.MODEL;
    }

    //获取IMEI识别号
    //所需权限 
    @SuppressLint("MissingPermission")
    public static String getIMEI(Activity activity) {
        //6.0以上的系统动态添加权限
        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();
    }

    //获取系统当前语言
    public static String getSystemLanguage() {
        return Locale.getDefault().getLanguage();
    }

    //获取设备电量
    @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);
    }

    //获取设备内存可用大小(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);
    }

    //获取设备内存可用的总量大小(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);
    }

    //获得SD卡可用总量大小
    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);
    }

    //获得sd卡可用大小
    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);
     }

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

//写入外部存储
android.permission.WRITE_EXTERNAL_STORAGE，允许写入外部存储

//读取外部存储
android.permission.READ_EXTERNAL_STORAGE，允许读取外部存储

//读取系统日志
android.permission.READ_LOGS，读取系统底层日志

//读取短信内容
android.permission.READ_SMS，读取短信内容

//振动
android.permission.VIBRATE，允许振动

//重启设备
android.permission.REBOOT，允许程序重新启动设备

//安装应用程序
android.permission.INSTALL_PACKAGES，允许程序安装应用

//修改声音
android.permission.MODIFY_AUDIO_SETTINGS，修改声音设置信息

//录音
android.permission.RECORD_AUDIO，录制声音通过手机或耳机的麦克

//使用闪光灯
android.permission.FLASHLIGHT，允许访问闪光灯

//访问网络
android.permission.INTERNET，访问网络连接，可能产生GPRS流量

//改变wifi状态
android.permission.CHANGE_WIFI_STATE，打开wifi，改变wifi状态

//获取WiFi状态
android.permission.ACCESS_WIFI_STATE，获取当前WiFi接入的状态以及WLAN热点的信息

//获取网络状态
android.permission.ACCESS_NETWORK_STATE，获取网络信息状态，如当前的网络连接是否有效

//拍照权限
android.permission.CAMERA，允许访问摄像头进行拍照

//使用蓝牙
android.permission.BLUETOOTH，允许程序连接配对过的蓝牙设备

//电池状态
android.permission.BATTERY_STATS，允许应用程序获取电池状态的权限