Android 在TextInputLayout中添加/删除编辑文本

我们已经有一个EditText，只能有一个

我已经为我的应用程序（LoginFragment）构建了一个片段，它处理两种主要的身份验证模式；即登录并注册用户。有一个按钮允许用户在“登录模式”和“注册”模式之间切换。每个“模式”都有一些其他模式不需要的附加视图。因此，有必要在切换模式时添加和删除视图

我在TextInputLayout布局中使用EditText视图。当我执行以下操作时，我的应用程序崩溃：

• 以编程方式添加EditText
• 以编程方式删除EditText
• 以编程方式添加编辑文本->崩溃

我得到的错误是：

java.lang.IllegalArgumentException: We already have an EditText, can only have one
                at android.support.design.widget.TextInputLayout.setEditText(TextInputLayout.java:166)
                at android.support.design.widget.TextInputLayout.addView(TextInputLayout.java:155)
                at android.view.ViewGroup.addView(ViewGroup.java:3985)
                at android.view.ViewGroup.addView(ViewGroup.java:3961)
                at com.mydomain.myapp.fragments.LoginFragment.showActivateAccountViews(LoginFragment.java:317)

这来自android.support.design.widget.TextInputLayout，它有一个内部私有EditText变量，在添加视图时设置该变量（下面的源代码）。似乎当我第二次尝试将视图添加到TextInputLayout时，mEditText变量已经设置好了。该类没有自己的.removeView（）方法，所以我不知道该如何删除它

我怀疑我错误地删除了EditText视图，但无法找出我做错了什么。我也读过其他一些关于删除视图的堆栈溢出文章，但是这些方法也没有解决这个问题

• 加入一项意见—
• 删除视图-

有没有人对我如何让它工作有什么想法

下面是我自己的代码供参考

LoginFragment.java

...
import android.support.design.widget.TextInputLayout;
import android.widget.EditText;

public class LoginFragment extends Fragment {

    private RelativeLayout mContainer;

    ...

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        final View view = inflater.inflate(R.layout.fragment_login, container, false);
        mContainer = ((RelativeLayout) view.findViewById(R.id.login_container));

        showLoginViews();

        LayoutTransition layoutTransition = mContainer.getLayoutTransition();
        layoutTransition.enableTransitionType(LayoutTransition.CHANGING);

        return view;
    }

    /**
     * Show the view elements for Login mode
     */
    private void showLoginViews() {

        LayoutInflater li = (LayoutInflater)getActivity().getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);

        // Configure the button for the primary action
        Button loginButton = (Button)mContainer.findViewById(R.id.button_login_fragment_primary_action);
        ...

        // Configure the toggle button to navigate to Activate Account mode
        TextView toggleButton = (TextView)mContainer.findViewById(R.id.button_toggle_mode);
        toggleButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LoginFragment.this.showActivateAccountViews();
            }
        });
        toggleButton.setText(getResources().getString(R.string.action_activate_account));

        // Hide the Member ID EditText
        ((TextInputLayout)mContainer.findViewById(R.id.member_id_inputlayout)).removeView(mContainer.findViewById(R.id.editText_member_id_field));
    }

    /**
     * Show view elements for Activate Account mode
     */
    private void showActivateAccountViews() {
        LayoutInflater li = (LayoutInflater)getActivity().getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);

        // Configure the primary button for the primary action - Activate Account
        Button activateAccountButton = (Button)mContainer.findViewById(R.id.button_login_fragment_primary_action);
        ...

        // Add the Member ID EditText
        ((TextInputLayout)mContainer.findViewById(R.id.member_id_inputlayout)).addView(li.inflate(R.layout.login_member_id_element_layout, (ViewGroup)mContainer.findViewById(R.id.member_id_inputlayout), false));

        // Configure the toggle button to navigate to Login mode
        TextView toggleButton = (TextView)mContainer.findViewById(R.id.button_toggle_mode);
        toggleButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LoginFragment.this.showLoginViews();
            }
        });
        toggleButton.setText(getResources().getString(R.string.action_login));
    }

    ...
}

import android.support.design.widget.TextInputLayout;
import android.widget.EditText;

public class LoginFragment extends Fragment {

    private RelativeLayout mContainer;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        final View view = inflater.inflate(R.layout.fragment_login, container, false);
        mContainer = ((RelativeLayout) view.findViewById(R.id.login_container));

        showLoginViews();

        LayoutTransition layoutTransition = mContainer.getLayoutTransition();
        layoutTransition.enableTransitionType(LayoutTransition.CHANGING);

        return view;
    }

    /**
     * Show the view elements for Login mode
     */
    private void showLoginViews() {

        LayoutInflater li = (LayoutInflater)getActivity().getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);

        // Configure the toggle button to navigate to Activate Account mode
s        TextView toggleButton = (TextView)mContainer.findViewById(R.id.button_toggle_mode);
        toggleButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LoginFragment.this.showActivateAccountViews();
            }
        });
        toggleButton.setText(getResources().getString(R.string.action_activate_account));

        // Hide the Member ID EditText
        ((LinearLayout)mContainer.findViewById(R.id.member_id_holderlayout)).removeView(mContainer.findViewById(R.id.member_id_inputlayout));
    }

    /**
     * Show view elements for Activate Account mode
     */
    private void showActivateAccountViews() {
        LayoutInflater li = (LayoutInflater)getActivity().getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);

        // Configure the primary button for the primary action - Activate Account
        Button activateAccountButton = (Button)mContainer.findViewById(R.id.button_login_fragment_primary_action);

        // Add the Member ID EditText
        ((LinearLayout)mContainer.findViewById(R.id.member_id_holderlayout)).addView(li.inflate(R.layout.login_member_id_element_layout, (ViewGroup) mContainer.findViewById(R.id.member_id_inputlayout), false));

        // Configure the toggle button to navigate to Login mode
        TextView toggleButton = (TextView)mContainer.findViewById(R.id.button_toggle_mode);
        toggleButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LoginFragment.this.showLoginViews();
            }
        });
        toggleButton.setText(getResources().getString(R.string.action_login));
    }
}

login\u member\u id\u element\u layout.xml

<?xml version="1.0" encoding="utf-8"?>
<EditText xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/editText_member_id_field"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/member_id" />

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context="com.mydomain.myapp.fragments.LoginFragment">

    <RelativeLayout
        android:id="@+id/login_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:animateLayoutChanges="true">

        <!--placeholder layout with params for activate account elements-->
        <android.support.design.widget.TextInputLayout
            android:id="@+id/member_id_inputlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <!-- a view can be added here-->
        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/email_inputlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <EditText
                android:id="@+id/editText_email_field"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:inputType="textEmailAddress" />

        </android.support.design.widget.TextInputLayout>

        <Button
            android:id="@+id/button_login_fragment_primary_action"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/password_inputlayout"
            android:text="@string/action_login" />

        <!-- Toggle button for Login/Activate Account-->
        <TextView
            android:id="@+id/button_toggle_mode"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/action_activate_account" />

    </RelativeLayout>

</android.support.design.widget.CoordinatorLayout>

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.TextInputLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/member_id_inputlayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <EditText
        android:id="@+id/editText_member_id_field"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="@string/member_id" />

</android.support.design.widget.TextInputLayout>

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <RelativeLayout
        android:id="@+id/login_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <!--placeholder for TextInputLayout to be dynamically added at runtime-->
        <LinearLayout
            android:id="@+id/member_id_holderlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">
            <!-- a login_member_id_element_layout can be dynamically added/removed here at runtime-->
        </LinearLayout>


        <!--TextInputLayout for static fields, the EditText is not removed at runtime-->
        <android.support.design.widget.TextInputLayout
            android:id="@+id/email_inputlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/member_id_holderlayout">

            <EditText
                android:id="@+id/editText_email_field"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:drawablePadding="@dimen/edittext_drawable_padding"
                android:drawableStart="?emailIcon"
                android:focusable="true"
                android:hint="Email"
                android:inputType="textEmailAddress" />
        </android.support.design.widget.TextInputLayout>

    </RelativeLayout>

</android.support.design.widget.CoordinatorLayout>

恭喜，您（可能？）发现了一个可能的bug（或者我应该说删除

TextInputLayout

的

EditText

？）时出现了非预期行为）

您可以看到

removeView（）

是来自ViewGroup的一个方法。它从视图组的子视图数组中删除

视图

，但不删除

InputTextLayout

对

编辑文本的引用

那我该怎么办

您必须扩展
TextInputLayout
并创建自己的方法，将
super.mEditText
设置为
null
。问题是，您仍然需要调用这两个方法，因为仅将
布局
引用设置为null可能会在应用程序的整个生命周期中将旧布局保留在内存中。
com.android.support.design库（v22.2.1）中似乎存在限制。不能在运行时直接删除EditText，然后将其添加到TextInputLayout。你可以把这只虫子当明星

我已经想出了解决这个问题的办法。我修改了xml布局，以便在运行时不从TextInputLayout中添加/删除EditText视图（这不起作用），而是将TextInputLayout本身添加/删除到LinearLayout保持器中。使用此解决方案，我们永远不需要从TextInputLayout中实际删除EditText

关于这个解决方案，唯一需要注意的是，它使您的视图层次结构比需要的更深一层。因此，如果您已经有UI性能问题，请记住这一点。如果您在阅读本文时发现com.android.support.design v22.2.1版本可用，则可能需要检查此问题是否已得到解决

否则，请参阅下面的示例代码以了解我的解决方案实现

LoginFragment.java

...
import android.support.design.widget.TextInputLayout;
import android.widget.EditText;

public class LoginFragment extends Fragment {

    private RelativeLayout mContainer;

    ...

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        final View view = inflater.inflate(R.layout.fragment_login, container, false);
        mContainer = ((RelativeLayout) view.findViewById(R.id.login_container));

        showLoginViews();

        LayoutTransition layoutTransition = mContainer.getLayoutTransition();
        layoutTransition.enableTransitionType(LayoutTransition.CHANGING);

        return view;
    }

    /**
     * Show the view elements for Login mode
     */
    private void showLoginViews() {

        LayoutInflater li = (LayoutInflater)getActivity().getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);

        // Configure the button for the primary action
        Button loginButton = (Button)mContainer.findViewById(R.id.button_login_fragment_primary_action);
        ...

        // Configure the toggle button to navigate to Activate Account mode
        TextView toggleButton = (TextView)mContainer.findViewById(R.id.button_toggle_mode);
        toggleButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LoginFragment.this.showActivateAccountViews();
            }
        });
        toggleButton.setText(getResources().getString(R.string.action_activate_account));

        // Hide the Member ID EditText
        ((TextInputLayout)mContainer.findViewById(R.id.member_id_inputlayout)).removeView(mContainer.findViewById(R.id.editText_member_id_field));
    }

    /**
     * Show view elements for Activate Account mode
     */
    private void showActivateAccountViews() {
        LayoutInflater li = (LayoutInflater)getActivity().getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);

        // Configure the primary button for the primary action - Activate Account
        Button activateAccountButton = (Button)mContainer.findViewById(R.id.button_login_fragment_primary_action);
        ...

        // Add the Member ID EditText
        ((TextInputLayout)mContainer.findViewById(R.id.member_id_inputlayout)).addView(li.inflate(R.layout.login_member_id_element_layout, (ViewGroup)mContainer.findViewById(R.id.member_id_inputlayout), false));

        // Configure the toggle button to navigate to Login mode
        TextView toggleButton = (TextView)mContainer.findViewById(R.id.button_toggle_mode);
        toggleButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LoginFragment.this.showLoginViews();
            }
        });
        toggleButton.setText(getResources().getString(R.string.action_login));
    }

    ...
}

import android.support.design.widget.TextInputLayout;
import android.widget.EditText;

public class LoginFragment extends Fragment {

    private RelativeLayout mContainer;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        final View view = inflater.inflate(R.layout.fragment_login, container, false);
        mContainer = ((RelativeLayout) view.findViewById(R.id.login_container));

        showLoginViews();

        LayoutTransition layoutTransition = mContainer.getLayoutTransition();
        layoutTransition.enableTransitionType(LayoutTransition.CHANGING);

        return view;
    }

    /**
     * Show the view elements for Login mode
     */
    private void showLoginViews() {

        LayoutInflater li = (LayoutInflater)getActivity().getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);

        // Configure the toggle button to navigate to Activate Account mode
s        TextView toggleButton = (TextView)mContainer.findViewById(R.id.button_toggle_mode);
        toggleButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LoginFragment.this.showActivateAccountViews();
            }
        });
        toggleButton.setText(getResources().getString(R.string.action_activate_account));

        // Hide the Member ID EditText
        ((LinearLayout)mContainer.findViewById(R.id.member_id_holderlayout)).removeView(mContainer.findViewById(R.id.member_id_inputlayout));
    }

    /**
     * Show view elements for Activate Account mode
     */
    private void showActivateAccountViews() {
        LayoutInflater li = (LayoutInflater)getActivity().getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);

        // Configure the primary button for the primary action - Activate Account
        Button activateAccountButton = (Button)mContainer.findViewById(R.id.button_login_fragment_primary_action);

        // Add the Member ID EditText
        ((LinearLayout)mContainer.findViewById(R.id.member_id_holderlayout)).addView(li.inflate(R.layout.login_member_id_element_layout, (ViewGroup) mContainer.findViewById(R.id.member_id_inputlayout), false));

        // Configure the toggle button to navigate to Login mode
        TextView toggleButton = (TextView)mContainer.findViewById(R.id.button_toggle_mode);
        toggleButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LoginFragment.this.showLoginViews();
            }
        });
        toggleButton.setText(getResources().getString(R.string.action_login));
    }
}

login\u member\u id\u element\u layout.xml

<?xml version="1.0" encoding="utf-8"?>
<EditText xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/editText_member_id_field"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/member_id" />

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context="com.mydomain.myapp.fragments.LoginFragment">

    <RelativeLayout
        android:id="@+id/login_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:animateLayoutChanges="true">

        <!--placeholder layout with params for activate account elements-->
        <android.support.design.widget.TextInputLayout
            android:id="@+id/member_id_inputlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <!-- a view can be added here-->
        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/email_inputlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <EditText
                android:id="@+id/editText_email_field"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:inputType="textEmailAddress" />

        </android.support.design.widget.TextInputLayout>

        <Button
            android:id="@+id/button_login_fragment_primary_action"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/password_inputlayout"
            android:text="@string/action_login" />

        <!-- Toggle button for Login/Activate Account-->
        <TextView
            android:id="@+id/button_toggle_mode"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/action_activate_account" />

    </RelativeLayout>

</android.support.design.widget.CoordinatorLayout>

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.TextInputLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/member_id_inputlayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <EditText
        android:id="@+id/editText_member_id_field"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="@string/member_id" />

</android.support.design.widget.TextInputLayout>

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <RelativeLayout
        android:id="@+id/login_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <!--placeholder for TextInputLayout to be dynamically added at runtime-->
        <LinearLayout
            android:id="@+id/member_id_holderlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">
            <!-- a login_member_id_element_layout can be dynamically added/removed here at runtime-->
        </LinearLayout>


        <!--TextInputLayout for static fields, the EditText is not removed at runtime-->
        <android.support.design.widget.TextInputLayout
            android:id="@+id/email_inputlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/member_id_holderlayout">

            <EditText
                android:id="@+id/editText_email_field"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:drawablePadding="@dimen/edittext_drawable_padding"
                android:drawableStart="?emailIcon"
                android:focusable="true"
                android:hint="Email"
                android:inputType="textEmailAddress" />
        </android.support.design.widget.TextInputLayout>

    </RelativeLayout>

</android.support.design.widget.CoordinatorLayout>



login_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<EditText xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/editText_member_id_field"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/member_id" />

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context="com.mydomain.myapp.fragments.LoginFragment">

    <RelativeLayout
        android:id="@+id/login_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:animateLayoutChanges="true">

        <!--placeholder layout with params for activate account elements-->
        <android.support.design.widget.TextInputLayout
            android:id="@+id/member_id_inputlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <!-- a view can be added here-->
        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/email_inputlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <EditText
                android:id="@+id/editText_email_field"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:inputType="textEmailAddress" />

        </android.support.design.widget.TextInputLayout>

        <Button
            android:id="@+id/button_login_fragment_primary_action"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/password_inputlayout"
            android:text="@string/action_login" />

        <!-- Toggle button for Login/Activate Account-->
        <TextView
            android:id="@+id/button_toggle_mode"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/action_activate_account" />

    </RelativeLayout>

</android.support.design.widget.CoordinatorLayout>

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.TextInputLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/member_id_inputlayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <EditText
        android:id="@+id/editText_member_id_field"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="@string/member_id" />

</android.support.design.widget.TextInputLayout>

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <RelativeLayout
        android:id="@+id/login_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <!--placeholder for TextInputLayout to be dynamically added at runtime-->
        <LinearLayout
            android:id="@+id/member_id_holderlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">
            <!-- a login_member_id_element_layout can be dynamically added/removed here at runtime-->
        </LinearLayout>


        <!--TextInputLayout for static fields, the EditText is not removed at runtime-->
        <android.support.design.widget.TextInputLayout
            android:id="@+id/email_inputlayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/member_id_holderlayout">

            <EditText
                android:id="@+id/editText_email_field"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:drawablePadding="@dimen/edittext_drawable_padding"
                android:drawableStart="?emailIcon"
                android:focusable="true"
                android:hint="Email"
                android:inputType="textEmailAddress" />
        </android.support.design.widget.TextInputLayout>

    </RelativeLayout>

</android.support.design.widget.CoordinatorLayout>


我实际上已经尝试过了，但是，mEditText被声明为私有，这样做打破了面向对象编程的封装规则。我应该把声明包含在原始帖子的代码片段中，包括现在。我没想到。可能是扩展
LinearLayout
并复制
TextInputLayout
的整个源代码，并声明一个
setEditText（）
方法？@MauriceGavin有结果吗？我针对该问题提出了错误报告：