自定义顶部弹出Toast

package com.kye.base.utils;import android.content.Context;import android.view.Gravity;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.view.WindowManager;import android.widget.LinearLayout;import android.widget.TextView;import android.widget.Toast;import com.kye.base.R;import java.lang.reflect.Field;/** *  * 自定义Toast */public class CusttomToast extends Toast {    private static Toast mToast;    public CusttomToast(Context context) {        super(context);    }    public static Toast makeText(Context context, CharSequence text, int duration) {        if (mToast == null) {            mToast = new Toast(context);        } else {            mToast.cancel();            mToast = new Toast(context);        }        //获取LayoutInflater对象        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);        //获得屏幕的宽度        int width = wm.getDefaultDisplay().getWidth();        //由layout文件创建一个View对象        View view = inflater.inflate(R.layout.layout_top_toast, null);        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(width,                ViewGroup.LayoutParams.WRAP_CONTENT);        TextView toastTextView = (TextView) view.findViewById(R.id.tv_toast);        //设置TextView的宽度为 屏幕宽度        toastTextView.setLayoutParams(layoutParams);        toastTextView.setText(text);        mToast.setView(view);        mToast.setGravity(Gravity.TOP, 0, 0);        mToast.setDuration(duration);        try {            Object mTN = null;            mTN = getField(mToast, "mTN");            if (mTN != null) {                Object mParams = getField(mTN, "mParams");                if (mParams != null                        && mParams instanceof WindowManager.LayoutParams) {                    WindowManager.LayoutParams params = (WindowManager.LayoutParams) mParams;                    params.windowAnimations = R.style.Animtop;                }            }        } catch (Exception e) {            LogOut.printStackTrace(e);        }        return mToast;    }    /**     * 反射字段     *     * @param object    要反射的对象     * @param fieldName 要反射的字段名称     * @return     * @throws NoSuchFieldException     * @throws IllegalAccessException     */    private static Object getField(Object object, String fieldName)            throws NoSuchFieldException, IllegalAccessException {        Field field = object.getClass().getDeclaredField(fieldName);        if (field != null) {            field.setAccessible(true);            return field.get(object);        }        return null;    }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#ff6666"    android:gravity="center_vertical"    android:orientation="vertical">    <TextView        android:id="@+id/tv_toast"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:gravity="center"        android:maxHeight="@dimen/h300"        android:minHeight="@dimen/h150"        android:textColor="@android:color/white"        android:textSize="@dimen/w50" /></LinearLayout>