短代码-带有背景的Toast

/**
 * @author Administrator
 * @year 2019
 * @Todo TODO 自定义Toast
 * @package_name com.example.shengsaidemo2019.toats
 * @project_name 2019ShengSaiDemo
 * @file_name DiyToast.java
 */
public class DiyToast {
    public static Toast toast;// 新建Toast

    public static void showToast(Context context, String string) {
        View toastRoot = LayoutInflater.from(context).inflate(
                R.layout.my_toast, null, false);
        TextView tv = (TextView) toastRoot.findViewById(R.id.TextViewInfo);
        if (toast == null) {// 如果当前没有toast正在显示
            toast = Toast.makeText(context, string, Toast.LENGTH_SHORT);// 展示Toast
            toast.setView(toastRoot);
            tv.setText(string);
        } else {// 如果有正在显示的toast
            toast.setView(toastRoot);
            tv.setText(string);
        }
        toast.show();// 展示Toast
    }
}

<?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" >
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/shaper_toast_show_back"
        android:orientation="horizontal" >
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_margin="15sp"
            android:gravity="center_vertical|center_horizontal"
            android:orientation="vertical" >
            <TextView
                android:id="@+id/TextViewInfo"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginBottom="15sp"
                android:layout_marginTop="15sp"
                android:text="text"
                android:textColor="#fff" />
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
    <corners android:radius="15sp" />
    <solid android:color="#3399FF" />
    <stroke
        android:width="8sp"
        android:color="#70FFFFFF" />
</shape>

DiyToast.showToast(getApplicationContext(), "请输入用户名");