窗口小部件未投放.我如何解决它? [英] Widgets aren't being casted. how do I fix it?

问题描述

每当我在应用程序中单击登录"按钮时，它就会崩溃并显示错误.这是我的activity_sign_in.xml和我的SignIn.java.

Whenever I click the sign in button in my app, it just crashes and shows an error. Here is my activity_sign_in.xml and my SignIn.java.

activity_sign_in.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@mipmap/background1"
    tools:context=".SignIn">

    <LinearLayout
        android:orientation="vertical"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_centerInParent="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <com.rengwuxian.materialedittext.MaterialEditText
            android:id="@+id/editPhone"
            android:hint="Phone Number"
            android:textColorHint="@android:color/white"
            android:text="0988112456"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textColor="@android:color/white"
            android:textSize="34sp"
            android:inputType="phone"
            app:met_baseColor="@android:color/white"
            app:met_floatingLabel="highlight"
            app:met_maxCharacters="11"
            app:met_primaryColor="@android:color/white"
            app:met_singleLineEllipsis="true"
            />

        <com.rengwuxian.materialedittext.MaterialEditText
            android:id="@+id/editPassword"
            android:hint="Password"
            android:textColorHint="@android:color/white"
            android:text="IMF"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textColor="@android:color/white"
            android:textSize="34sp"
            android:inputType="textPassword"
            app:met_baseColor="@android:color/white"
            app:met_floatingLabel="highlight"
            app:met_maxCharacters="11"
            app:met_primaryColor="@android:color/white"
            app:met_singleLineEllipsis="true"
            />

       <LinearLayout
        android:orientation="horizontal"
        android:weightSum="2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

           <CheckBox
               android:id="@+id/ckbRemember"
               style="@style/Material.Drawable.CheckBox"
               android:layout_width="0dp"
               android:layout_weight="1"
               android:layout_height="wrap_content"
               android:text="Remember Me"
               android:gravity="center_vertical"
               android:textColor="@android:color/white"
               app:cbd_tickColor="@color/colorPrimaryDark"
               app:cbd_strokeColor="@android:color/white"

               />

           <TextView
               android:id="@+id/txtForgotPwd"
               android:textColor="@android:color/white"
               android:text="@string/forgot_pwd"
               android:layout_weight="1"
               android:layout_width="0dp"
               android:layout_height="wrap_content" />

       </LinearLayout>


    </LinearLayout>

    <info.hoang8f.widget.FButton
        android:id="@+id/btnSignIn1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginBottom="8dp"
        android:text="@string/Button2"
        android:textColor="@android:color/white"
        app:cornerRadius="4dp"
        app:fButtonColor="#00A9D440"
        app:shadowColor="#00000000"
        app:shadowEnabled="true"
        app:shadowHeight="5dp" />

</RelativeLayout>

SignIn.java

public class SignIn extends AppCompatActivity {

    EditText editPhone,editPassword;
    Button btnSignIn;
    CheckBox ckbRemember;
    TextView txtForgotPwd;

    FirebaseDatabase database;
    DatabaseReference table_user;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sign_in);

        editPassword = (MaterialEditText)findViewById(R.id.editPassword);
        editPhone    = (MaterialEditText)findViewById(R.id.editPhone);
        btnSignIn    = (Button)findViewById(R.id.btnSignIn1);
        ckbRemember = (CheckBox)findViewById(R.id.ckbRemember);
        txtForgotPwd = (TextView) findViewById(R.id.txtForgotPwd);

原因:java.lang.ClassCastException:android.support.v7.widget.AppCompatTextView无法转换为com.rey.material.widget.TextView"

"Caused by: java.lang.ClassCastException: android.support.v7.widget.AppCompatTextView cannot be cast to com.rey.material.widget.TextView"

推荐答案

在SignIn.java中检查您的导入.您可能正在导入com.rey.material.widget.TextView而不是android.widget.TextView.如果要使用com.rey TextView而不是普通的TextView，则必须编写

Check your imports in SignIn.java. You are probably importing com.rey.material.widget.TextView instead of android.widget.TextView. If you want to use the com.rey TextView instead of the normal one you have to write

 <com.rey.material.widget.TextView
           android:id="@+id/txtForgotPwd"
           android:textColor="@android:color/white"
           ...

在您的xml中.

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