50、Toast自定义布局

 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android" >
     <solid android:color="@color/black" />
     <corners android:radius="10dp" />
 </shape>

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/layout_my_dialog_cahce"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:paddingTop="30dp"
     android:paddingBottom="20dp"
     android:paddingLeft="70dp"
     android:paddingRight="70dp"
     android:background="@drawable/my_dialog_cache_bg"
     android:gravity="center"
     android:orientation="vertical" >
     <ImageView
         android:src="@drawable/my_center_dialog_ok"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content" />
     <TextView
         android:text="清除成功"
         android:textColor="@color/white2"
         android:textSize="16sp"
         android:layout_marginTop="10dp"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content" />
 </LinearLayout>

 Toast toast = new Toast(mActivity);
 View view = LayoutInflater.from(mActivity).inflate(R.layout.my_center_cache_dialog, null);

   LinearLayout layout_my_dialog_cahce = (LinearLayout) view.findViewById(R.id.layout_my_dialog_cahce);
   layout_my_dialog_cahce.getBackground().setAlpha(95);

   toast.setView(view);
   toast.setGravity(Gravity.CENTER, 0, 0);
   toast.show();