全面屏適配

代碼黨或者項目進度黨拿去：

import android.content.Context;
import android.os.Build;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class NotchUtils {

    public static int getNotchInHeight(Context context) {
        try {
            if (hasNotchInOppo(context)) {
                return getStatusBarHeight(context);
            } else if (hasNotchInVivo(context)) {
                return ViewUtils.dipToPx(context, 27);
            } else if (hasNotchInHuawei(context)) {
                return getNotchSize(context)[1];
            } else if (hasNotchInXiaomi(context)) {
                return getStatusBarHeight(context);
            } else {
                return 0;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return 0;
    }

    public static boolean hasNotch(Context context) {
        try {
            if (hasNotchInOppo(context)) {
                return true;
            }

            if (hasNotchInVivo(context)) {
                return true;
            }

            if (hasNotchInHuawei(context)) {
                return true;
            }

            if (hasNotchInXiaomi(context)) {
                return true;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }

    //判斷該 OPPO 手機是否爲劉海屏手機
    public static boolean hasNotchInOppo(Context context) {
        return context.getPackageManager().hasSystemFeature("com.oppo.feature.screen.heteromorphism");
    }

    //判斷該 Vivi 手機是否爲劉海屏手機
    public static boolean hasNotchInVivo(Context context) {
        boolean hasNotch = false;
        try {
            ClassLoader cl = context.getClassLoader();
            Class ftFeature = cl.loadClass("android.util.FtFeature");
            Method[] methods = ftFeature.getDeclaredMethods();
            if (methods != null) {
                for (int i = 0; i < methods.length; i++) {
                    Method method = methods[i];
                    if (method != null) {
                        if (method.getName().equalsIgnoreCase("isFeatureSupport")) {
                            hasNotch = (boolean) method.invoke(ftFeature, 0x00000020);
                            break;
                        }
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            hasNotch = false;
        }
        return hasNotch;
    }

    public static int getStatusBarHeight(Context context) {
        int statusBarHeight = 0;
        int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
        if (resourceId > 0) {
            statusBarHeight = context.getResources().getDimensionPixelSize(resourceId);
        }
        return statusBarHeight;
    }

    //判斷該 huawei 手機是否爲劉海屏手機
    public static boolean hasNotchInHuawei(Context context) {
        boolean hasNotch = false;
        try {
            ClassLoader cl = context.getClassLoader();
            Class HwNotchSizeUtil = cl.loadClass("com.huawei.android.util.HwNotchSizeUtil");
            Method hasNotchInScreen = HwNotchSizeUtil.getMethod("hasNotchInScreen");
            if (hasNotchInScreen != null) {
                hasNotch = (boolean) hasNotchInScreen.invoke(HwNotchSizeUtil);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return hasNotch;
    }

    /**
     * 小米劉海屏判斷.
     *
     * @return true means notch
     * @throws IllegalArgumentException if the key exceeds 32 characters
     */
    public static boolean hasNotchInXiaomi(Context context) {
        int result = 0;
        if (isXiaomi()) {
            try {
                ClassLoader classLoader = context.getClassLoader();
                @SuppressWarnings("rawtypes")
                Class SystemProperties = classLoader.loadClass("android.os.SystemProperties");
                //參數類型
                @SuppressWarnings("rawtypes")
                Class[] paramTypes = new Class[2];
                paramTypes[0] = String.class;
                paramTypes[1] = int.class;
                Method getInt = SystemProperties.getMethod("getInt", paramTypes);
                //參數
                Object[] params = new Object[2];
                params[0] = new String("ro.miui.notch");
                params[1] = new Integer(0);
                result = (Integer) getInt.invoke(SystemProperties, params);

            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            } catch (NoSuchMethodException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } catch (IllegalArgumentException e) {
                e.printStackTrace();
            } catch (InvocationTargetException e) {
                e.printStackTrace();
            }
        }
        //result =  0 if it is not notch ; return 1 means notch
        return result == 1;
    }

    // 是不是小米手機
    public static boolean isXiaomi() {
        return "XIAOMI".equals(Build.MANUFACTURER.toUpperCase());
    }

    public static int[] getNotchSize(Context context) {
        int[] ret = new int[]{0, 0};
        try {
            ClassLoader cl = context.getClassLoader();
            Class HwNotchSizeUtil = cl.loadClass("com.huawei.android.util.HwNotchSizeUtil");
            Method get = HwNotchSizeUtil.getMethod("getNotchSize");
            ret = (int[]) get.invoke(HwNotchSizeUtil);
        } catch (ClassNotFoundException e) {

        } catch (NoSuchMethodException e) {

        } catch (Exception e) {

        } finally {
            return ret;
        }
    }

}
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