提示框的优化之自定义Toast组件之（三）Toast组件优化

开发步骤：

• 在toast_customer.xml文件中添加一个图片组件对象显示提示图片

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout ......>

     <ImageView android:id="@+id/toastIcon"
         android:layout_width="24dp"
         android:layout_height="24dp"
         android:layout_gravity="center_vertical"/>

 ......

 </LinearLayout>

• 在LoginActivity.java类中的自定义Toast调用方法中添加对图片组件的设置

 public class LoginActivity extends AppCompatActivity {

     ........

     private void showCustomerToast(final int icon, final String message){
         LayoutInflater inflater=getLayoutInflater();
         View layout=inflater.inflate(R.layout.toast_customer, (ViewGroup) findViewById(R.id.toast_layout_root));
         ......

         //图片组件的设置
         ImageView toastIcon=(ImageView)layout.findViewById(R.id.toastIcon);
         toastIcon.setBackgroundResource(icon);   

         ......

         Toast toast=new Toast(getApplicationContext());
         toast.setDuration(Toast.LENGTH_LONG);
         toast.setView(layout);
         toast.show();
     }
    ......
 }

• 调用该方法

 public class LoginActivity extends AppCompatActivity {
     ......
     private  class ViewOcl implements View.OnClickListener{
        public void onClick (View v){
          ......
          if (login_flag) {
               showCustomerToast(android.R.drawable.ic_menu_call,"欢迎登录，" + account);
               ......
          }
          else {
               showCustomerToast(android.R.drawable.ic_delete,"账号或密码错误");
          }
          break;
          ......
        }
     }
     ......
 }

运行：

接下来，同理，把自定义方法showCustomerToast（）放入Register_Activity.java中，在Checkform（）中调用，修改注册页面的警告样式：

 public class Register_Activity extends AppCompatActivity {
     ......
     private boolean checkform() {
         if (this.txtRegAccount.getText().toString() == null || this.txtRegAccount.getText().toString().length() == 0) {

             //Toast.makeText(getApplicationContext(), "警告：注册账号不能为空", Toast.LENGTH_LONG).show();
             showCustomerToast(android.R.drawable.ic_delete, "警告：注册账号不能为空");
             return false;
         }
         if (this.txtRegPassword.getText().toString() == null || this.txtRegPassword.getText().toString().length() == 0) {
             //Toast.makeText(getApplicationContext(), "警告：注册密码不能为空", Toast.LENGTH_LONG).show();
             showCustomerToast(android.R.drawable.ic_delete,"警告：注册密码不能为空");
             return false;
         }
         if (!(this.txtRegPassword.getText().toString()).equals((this.txtReRegPassword.getText().toString()))) {
             //Toast.makeText(getApplicationContext(), "警告:两次密码不一致", Toast.LENGTH_LONG).show();
             showCustomerToast(android.R.drawable.ic_delete,"警告:两次密码不一致");
             return false;
         }
         return true;
     }
     ......
 }

运行：