Question

我的android应用程序正在停止，这是一个运行时错误：

充气类android.support.design.widget.CoordinatorLayout

Log cat：

    Process: coml.example.pandey.firebasedatabase, PID: 31613
                                                                                  java.lang.RuntimeException: Unable to start activity ComponentInfo{coml.example.pandey.firebasedatabase/coml.example.pandey.firebasedatabase.LoginActivity}: java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.
                                                                                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
                                                                                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
                                                                                      at android.app.ActivityThread.-wrap12(ActivityThread.java)
                                                                                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
                                                                                      at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                                      at android.os.Looper.loop(Looper.java:154)
                                                                                      at android.app.ActivityThread.main(ActivityThread.java:6119)
                                                                                      at java.lang.reflect.Method.invoke(Native Method)
                                                                                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
                                                                                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
                                                                                   Caused by: java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.
                                                                                      at android.support.v7.app.AppCompatDelegateImplV9.setSupportActionBar(AppCompatDelegateImplV9.java:207)
                                                                                      at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:130)
                                                                                      at coml.example.pandey.firebasedatabase.LoginActivity.onCreate(LoginActivity.java:36)
                                                                                      at android.app.Activity.performCreate(Activity.java:6679)
                                                                                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
                                                                                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618)
                                                                                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726) 
                                                                                      at android.app.ActivityThread.-wrap12(ActivityThread.java) 
                                                                                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477) 
                                                                                      at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                                      at android.os.Looper.loop(Looper.java:154) 
                                                                                      at android.app.ActivityThread.main(ActivityThread.java:6119) 
                                                                                      at java.lang.reflect.Method.invoke(Native Method) 
                                                                                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
                                                                                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)

我的LoginActivity.java oncreate代码是

       protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_login);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

我的activity_login：

   <?xml version="1.0" encoding="utf-8"?>
 <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"
android:fitsSystemWindows="true"
tools:context="coml.xxxxxx.firebasedatabase.LoginActivity">

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@color/colorPrimary"
    android:gravity="center"
    android:orientation="vertical"
    android:padding="@dimen/activity_horizontal_margin">


    <ImageView
        android:layout_width="@dimen/logo_w_h"
        android:layout_height="@dimen/logo_w_h"
        android:layout_gravity="center_horizontal"
        android:layout_marginBottom="30dp"
        android:src="@mipmap/ic_launcher" />

    <android.support.design.widget.TextInputLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/email"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="10dp"
            android:hint="@string/hint_email"
            android:inputType="textEmailAddress"
            android:textColor="@android:color/white"
            android:textColorHint="@android:color/white" />
    </android.support.design.widget.TextInputLayout>

    <android.support.design.widget.TextInputLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/password"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="10dp"
            android:hint="@string/hint_password"
            android:inputType="textPassword"
            android:textColor="@android:color/white"
            android:textColorHint="@android:color/white" />
    </android.support.design.widget.TextInputLayout>

    <!-- Login Button -->

    <Button
        android:id="@+id/btn_login"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dip"
        android:background="@color/colorAccent"
        android:text="@string/btn_login"
        android:textColor="@android:color/black" />

    <Button
        android:id="@+id/btn_reset_password"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dip"
        android:background="@null"
        android:text="@string/btn_forgot_password"
        android:textAllCaps="false"
        android:textColor="@color/colorAccent" />

    <!-- Link to Login Screen -->

    <Button
        android:id="@+id/btn_signup"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dip"
        android:background="@null"
        android:text="@string/btn_link_to_register"
        android:textAllCaps="false"
        android:textColor="@color/white"
        android:textSize="15dp" />
</LinearLayout>

<ProgressBar
    android:id="@+id/progressBar"
    android:layout_width="30dp"
    android:layout_height="30dp"
    android:layout_gravity="center|bottom"
    android:layout_marginBottom="20dp"
    android:visibility="gone" />
 </android.support.design.widget.CoordinatorLayout>

Answer 1

更新您的activity_login.xml文件

  <?xml version="1.0" encoding="utf-8"?>
 <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"
android:fitsSystemWindows="true"
tools:context="coml.xxxxxx.firebasedatabase.LoginActivity">

<android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|enterAlways"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />



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

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@color/colorPrimary"
    android:gravity="center"
    android:orientation="vertical"
    android:padding="@dimen/activity_horizontal_margin">


    <ImageView
        android:layout_width="@dimen/logo_w_h"
        android:layout_height="@dimen/logo_w_h"
        android:layout_gravity="center_horizontal"
        android:layout_marginBottom="30dp"
        android:src="@mipmap/ic_launcher" />

    <android.support.design.widget.TextInputLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/email"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="10dp"
            android:hint="@string/hint_email"
            android:inputType="textEmailAddress"
            android:textColor="@android:color/white"
            android:textColorHint="@android:color/white" />
    </android.support.design.widget.TextInputLayout>

    <android.support.design.widget.TextInputLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <EditText
            android:id="@+id/password"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="10dp"
            android:hint="@string/hint_password"
            android:inputType="textPassword"
            android:textColor="@android:color/white"
            android:textColorHint="@android:color/white" />
    </android.support.design.widget.TextInputLayout>

    <!-- Login Button -->

    <Button
        android:id="@+id/btn_login"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dip"
        android:background="@color/colorAccent"
        android:text="@string/btn_login"
        android:textColor="@android:color/black" />

    <Button
        android:id="@+id/btn_reset_password"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dip"
        android:background="@null"
        android:text="@string/btn_forgot_password"
        android:textAllCaps="false"
        android:textColor="@color/colorAccent" />

    <!-- Link to Login Screen -->

    <Button
        android:id="@+id/btn_signup"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dip"
        android:background="@null"
        android:text="@string/btn_link_to_register"
        android:textAllCaps="false"
        android:textColor="@color/white"
        android:textSize="15dp" />
</LinearLayout>

<ProgressBar
    android:id="@+id/progressBar"
    android:layout_width="30dp"
    android:layout_height="30dp"
    android:layout_gravity="center|bottom"
    android:layout_marginBottom="20dp"
    android:visibility="gone" />
 </android.support.design.widget.CoordinatorLayout>

Answer 2

转到您的清单文件并在要显示工具栏的活动中执行此操作

user@server:~/a$ cd ~/b
user@server:~/a$ ls -d $PREVIOUS_PATH
/home/user/a
user@server:~/a$ cp file $PREVIOUS_PATH # will copy file to /home/user/a
user@server:~/b$ cd -

然后在styles.xml中添加以下内容：

<activity android:name=".YourActivity"  
 android:theme="@style/AppTheme.NoActionBar"><!-- ADD THIS LINE -->

我的android应用程序正在停止

2 个答案: