从我的导航抽屉打开新活动时，我的Android应用程序崩溃

时间：2015-07-14 13:45:34

标签： java android xml

我是Android Studio中的新手，并且一直在努力为学校制作应用程序。我做了一个导航抽屉，启动了一些新的活动。现在，它只启动两个活动，即设置活动（其中没有任何内容）和我的篮球教程主页活动。每当我启动设置活动时，活动都会显示，应用程序不会崩溃。但是，当我点击我的篮球教程主页活动时，应用程序因某些原因崩溃了。此活动包含几乎类似于youtube结构的开头，一旦您单击按钮，它就会将您发送到视频。我还有一个启动我的主要活动的启动画面。无论如何，请帮助你。它不是让我把java文件的导入添加到这个论坛上，所以我让它们出来，以及公共类......扩展....因为它不起作用。整个文件也没有错误。

Android Manifest：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.jehan.sportstutorials" >

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="Sports Tutorials"
        android:theme="@style/AppTheme" >
        <activity android:name=".Splash" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".MainActivity"
            android:label="Sports Tutorials" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.default" />
            </intent-filter>
        </activity>
        <activity
            android:name=".SettingsActivity"
            android:label="Settings"
            android:parentActivityName=".MainActivity" >
        </activity>
        <activity
            android:name=".basketball_tutorial_home_page"
            android:label="Basketball Tutorials"
            android:parentActivityName=".MainActivity">
        </activity>
    </application>

</manifest>

主要活动xml：

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/navigation_drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="@bool/fitsSystemWindows">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="@dimen/status_bar_kitkat_height"
            android:background="?colorPrimary"/>

        <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:background="?colorPrimaryDark"/>

    </LinearLayout>

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="0dp">

        <TextView
            android:id="@+id/textView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text="Welcome To Sports Tutorials!"
            android:textAppearance="@style/TextAppearance.AppCompat.Display1"
            android:textColor="@color/md_text"
            android:singleLine="false"
            android:padding="20dp"
            android:gravity="center"
            android:textStyle="bold"
            android:textIsSelectable="false" />

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center|bottom"
            android:text="Just Swipe Left To Get Started!"
            android:textAppearance="@style/TextAppearance.AppCompat.Display1"
            android:textColor="@color/md_text"
            android:singleLine="false"
            android:padding="20dp"
            android:gravity="center"
            android:textSize="20sp"
            android:textStyle="italic"
            android:layout_marginBottom="30dp"/>

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?actionBarSize"
            android:minHeight="?attr/actionBarSize"
            android:background="@drawable/action_bar_color"
            android:elevation="4dp"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
            app:theme="@style/ToolbarTheme" />

    </FrameLayout>

    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="@bool/fitsSystemWindows"
        app:headerLayout="@layout/navigation_drawer_header"
        app:menu="@menu/navigation_drawer_menu"
        app:theme="@style/NavigationViewTheme" />

</android.support.v4.widget.DrawerLayout>

主要活动Java：

DrawerLayout drawerLayout;
Toolbar toolbar;
ActionBar actionBar;
TextView textView;

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

    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    actionBar = getSupportActionBar();
    actionBar.setHomeAsUpIndicator(R.drawable.ic_menu_white_24dp);
    actionBar.setDisplayHomeAsUpEnabled(true);


    drawerLayout = (DrawerLayout)        findViewById(R.id.navigation_drawer_layout);

    NavigationView navigationView = (NavigationView) findViewById(R.id.navigation_view);
    if (navigationView != null) {
        setupNavigationDrawerContent(navigationView);
    }

    setupNavigationDrawerContent(navigationView);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case android.R.id.home:
            drawerLayout.openDrawer(GravityCompat.START);
            return true;
    }
    return super.onOptionsItemSelected(item);
}

private void setupNavigationDrawerContent(NavigationView navigationView) {
    navigationView.setNavigationItemSelectedListener(
            new NavigationView.OnNavigationItemSelectedListener() {
                @Override
                public boolean onNavigationItemSelected(MenuItem menuItem) {
                    textView = (TextView) findViewById(R.id.textView);
                    switch (menuItem.getItemId()) {
                        case R.id.item_navigation_drawer_basketball:
                            menuItem.setChecked(true);
                            textView.setText(menuItem.getTitle());
                            drawerLayout.closeDrawer(GravityCompat.START);
                            Intent i = new Intent(MainActivity.this, basketball_tutorial_home_page.class);
                            startActivity(i);
                            return true;
                        case R.id.item_navigation_drawer_starred:
                            menuItem.setChecked(true);
                            textView.setText(menuItem.getTitle());
                            drawerLayout.closeDrawer(GravityCompat.START);
                            return true;
                        case R.id.item_navigation_drawer_sent_mail:
                            menuItem.setChecked(true);
                            textView.setText(menuItem.getTitle());
                            drawerLayout.closeDrawer(GravityCompat.START);
                            return true;
                        case R.id.item_navigation_drawer_drafts:
                            menuItem.setChecked(true);
                            textView.setText(menuItem.getTitle());
                            drawerLayout.closeDrawer(GravityCompat.START);
                            return true;
                        case R.id.item_navigation_drawer_settings:
                            menuItem.setChecked(true);
                            textView.setText(menuItem.getTitle());
                            drawerLayout.closeDrawer(GravityCompat.START);
                            Intent intent1 = new Intent(MainActivity.this, SettingsActivity.class);
                            startActivity(intent1);
                            return true;
                        case R.id.item_navigation_drawer_help:
                            menuItem.setChecked(true);
                            Toast.makeText(MainActivity.this, menuItem.getTitle().toString(), Toast.LENGTH_SHORT).show();
                            drawerLayout.closeDrawer(GravityCompat.START);
                            return true;
                    }
                    return true;
                }
            });
}

篮球教程主页xml：

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/md_divider">

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:background="?colorPrimary"/>

    <android.support.v7.widget.Toolbar
        android:layout_marginTop="0dp"
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?actionBarSize"
        android:background="@drawable/action_bar_color"
        android:elevation="4dp"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
        app:theme="@style/ToolbarTheme" />

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="509dp"
        android:layout_gravity="bottom"
        android:background="@color/md_divider"
        android:padding="7dp">

        <LinearLayout
            android:orientation="horizontal"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#00FF00"
            android:elevation="4dp">

            <ImageButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/imageButton1"
                android:scaleType="fitStart"
                android:background="#00FF00"
                android:layout_gravity="center"
                android:elevation="2dp"
                android:src="@drawable/icon_shooting_tutorial"/>

            <LinearLayout
                android:orientation="vertical"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="#00FF00">

                <Button
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:text="Basketball Shooting Tutorial"
                    android:id="@+id/button1"
                    android:layout_gravity="center"
                    android:padding="5dp"
                    android:layout_weight="1"
                    android:theme="@style/TextAppearance.AppCompat.Body2"
                    android:textSize="14sp"
                    android:gravity="start|bottom"
                    android:background="#00FF00"
                    android:inputType="text" />

                <Button
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    android:text="Length: 04:43"
                    android:id="@+id/button2"
                    android:layout_gravity="center"
                    android:layout_weight="2"
                    android:theme="@style/TextAppearance.AppCompat.Body1"
                    android:gravity="start"
                    android:textSize="12sp"
                    android:textStyle="italic"
                    android:paddingLeft="5dp"
                    android:paddingRight="5dp"
                    android:paddingBottom="5dp"
                    android:background="#00FF00"
                    android:inputType="time"/>
            </LinearLayout>

        </LinearLayout>
    </LinearLayout>


</FrameLayout>

篮球教程Java：

Toolbar toolbar;

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

    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    TypedValue typedValueColorPrimaryDark = new TypedValue();
    basketball_tutorial_home_page.this.getTheme().resolveAttribute(R.attr.colorPrimaryDark, typedValueColorPrimaryDark, true);
    final int colorPrimaryDark = typedValueColorPrimaryDark.data;
    if (Build.VERSION.SDK_INT >= 21) {
        getWindow().setStatusBarColor(colorPrimaryDark);
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_basketball_tutorial_home_page, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_bar) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

导航抽屉菜单：

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <group android:checkableBehavior="single">
        <item
            android:checked="true"
            android:id="@+id/item_navigation_drawer_basketball"
            android:icon="@drawable/basketball_drawer"
            android:title="Basketball" />
        <item
            android:id="@+id/item_navigation_drawer_starred"
            android:icon="@drawable/ic_action_toggle_star"
            android:title="Starred" />
        <item
            android:id="@+id/item_navigation_drawer_sent_mail"
            android:icon="@drawable/ic_action_content_send"
            android:title="Sent mail" />
        <item
            android:id="@+id/item_navigation_drawer_drafts"
            android:icon="@drawable/ic_action_content_drafts"
            android:title="Drafts" />
    </group>

    <item android:title="More">
        <menu>
            <item
                android:id="@+id/item_navigation_drawer_settings"
                android:icon="@drawable/ic_action_action_settings"
                android:title="Settings" />
            <item
                android:id="@+id/item_navigation_drawer_help"
                android:icon="@drawable/ic_action_action_help"
                android:title="Help" />
        </menu>
    </item>

</menu>

以下是该应用的日志：

07-13 12:30:34.823    1011-1018/com.jehan.sportstutorials W/art﹕ Suspending all threads took: 8.605ms
07-13 12:30:34.896    1011-1023/com.jehan.sportstutorials I/art﹕ Background sticky concurrent mark sweep GC freed 3067(319KB) AllocSpace objects, 0(0B) LOS objects, 0% free, 1511KB/1511KB, paused 23.822ms total 134.618ms
07-13 12:30:34.922    1011-1023/com.jehan.sportstutorials W/art﹕ Suspending all threads took: 25.693ms
07-13 12:30:35.187    1011-1023/com.jehan.sportstutorials I/art﹕ Background partial concurrent mark sweep GC freed 349(33KB) AllocSpace objects, 0(0B) LOS objects, 40% free, 1477KB/2MB, paused 3.349ms total 132.790ms
07-13 12:30:35.201    1011-1018/com.jehan.sportstutorials W/art﹕ Suspending all threads took: 5.092ms
07-13 12:30:38.036    1011-1011/com.jehan.sportstutorials I/Process﹕ Sending signal. PID: 1011 SIG: 9
07-13 12:30:52.636    1153-1173/com.jehan.sportstutorials D/OpenGLRenderer﹕ Render dirty regions requested: true
07-13 12:30:52.644    1153-1153/com.jehan.sportstutorials D/﹕ HostConnection::get() New Host Connection established 0xae0c9580, tid 1153
07-13 12:30:52.724    1153-1153/com.jehan.sportstutorials D/Atlas﹕ Validating map...
07-13 12:30:52.972    1153-1173/com.jehan.sportstutorials D/﹕ HostConnection::get() New Host Connection established 0xae0c9e70, tid 1173
07-13 12:30:52.983    1153-1173/com.jehan.sportstutorials I/OpenGLRenderer﹕ Initialized EGL, version 1.4
07-13 12:30:53.003    1153-1173/com.jehan.sportstutorials D/OpenGLRenderer﹕ Enabling debug mode 0
07-13 12:30:53.035    1153-1173/com.jehan.sportstutorials W/EGL_emulation﹕ eglSurfaceAttrib not implemented
07-13 12:30:53.035    1153-1173/com.jehan.sportstutorials W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xa6c4c640, error=EGL_SUCCESS
07-13 12:30:53.630    1153-1172/com.jehan.sportstutorials I/System.out﹕ 888.0
07-13 12:30:54.639    1153-1172/com.jehan.sportstutorials I/System.out﹕ 1073.4697
07-13 12:30:55.660    1153-1172/com.jehan.sportstutorials I/System.out﹕ 1252.9235
07-13 12:30:56.680    1153-1172/com.jehan.sportstutorials I/System.out﹕ 1437.9651
07-13 12:30:57.704    1153-1153/com.jehan.sportstutorials I/AppCompatViewInflater﹕ app:theme is now deprecated. Please move to using android:theme instead.
07-13 12:30:57.731    1153-1153/com.jehan.sportstutorials I/AppCompatViewInflater﹕ app:theme is now deprecated. Please move to using android:theme instead.
07-13 12:30:57.935    1153-1173/com.jehan.sportstutorials W/EGL_emulation﹕ eglSurfaceAttrib not implemented
07-13 12:30:57.935    1153-1173/com.jehan.sportstutorials W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xa6c4c660, error=EGL_SUCCESS
07-13 12:30:59.594    1153-1153/com.jehan.sportstutorials I/Choreographer﹕ Skipped 94 frames!  The application may be doing too much work on its main thread.
07-13 12:31:03.214    1153-1153/com.jehan.sportstutorials I/AppCompatViewInflater﹕ app:theme is now deprecated. Please move to using android:theme instead.
07-13 12:31:03.237    1153-1153/com.jehan.sportstutorials W/ResourceType﹕ Too many attribute references, stopped at: 0x01010099
07-13 12:31:03.238    1153-1153/com.jehan.sportstutorials W/ResourceType﹕ Too many attribute references, stopped at: 0x0101009a
07-13 12:31:03.238    1153-1153/com.jehan.sportstutorials W/ResourceType﹕ Too many attribute references, stopped at: 0x0101009b
07-13 12:31:03.255    1153-1153/com.jehan.sportstutorials D/AndroidRuntime﹕ Shutting down VM
07-13 12:31:03.259    1153-1153/com.jehan.sportstutorials E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.jehan.sportstutorials, PID: 1153
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jehan.sportstutorials/com.jehan.sportstutorials.BasketballTutorial}: android.view.InflateException: Binary XML file line #53: Error inflating class Button
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
 Caused by: android.view.InflateException: Binary XML file line #53: Error inflating class Button
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:249)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:106)
at com.jehan.sportstutorials.BasketballTutorial.onCreate(BasketballTutorial.java:18)
at android.app.Activity.performCreate(Activity.java:5937)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)


at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Caused by: java.lang.RuntimeException: Failed to resolve attribute at index 24
at android.content.res.TypedArray.getColor(TypedArray.java:401)
at android.widget.TextView.<init>(TextView.java:692)
at android.widget.Button.<init>(Button.java:111)
at android.widget.Button.<init>(Button.java:107)
at android.support.v7.widget.AppCompatButton.<init>(AppCompatButton.java:63)
at android.support.v7.widget.AppCompatButton.<init>(AppCompatButton.java:59)
at android.support.v7.internal.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:101)
at android.support.v7.app.AppCompatDelegateImplV7.createView(AppCompatDelegateImplV7.java:802)
at android.support.v7.app.AppCompatDelegateImplV7.onCreateView(AppCompatDelegateImplV7.java:832)
at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:725)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:249)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:106)
at com.jehan.sportstutorials.BasketballTutorial.onCreate(BasketballTutorial.java:18)
at android.app.Activity.performCreate(Activity.java:5937)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)

请尽快解决问题，因为项目大约需要一周时间。提前谢谢！

1 个答案:

答案 0 :(得分：2)

在Android Manifest中，您在此处声明名为basketball_tutorial_home_page的活动：

<activity
    android:name=".basketball_tutorial_home_page"
    android:label="Basketball Tutorials"
    android:parentActivityName=".MainActivity">
</activity>

虽然您没有指定Basketball Tutorial的Activity类的名称实际上是什么，但我将假设您遵循标准并且您的Activity类名称是UpperCamelCase（类似于BasketballTutorial），而您的布局XML文件是snake_case（类似basketball_tutorial_home_page.xml）。

如果是这种情况，那么问题是您没有在清单中使用正确的名称。 android:name属性需要引用Java类，而不是布局XML文件。因此，此属性应该更像android:name=".BasketballTutorial"。

此外，您的篮球教程XML中看起来有一些奇怪的属性，这可能会导致您在logcat中看到的错误。

  • 您正在使用android:theme="@style/TextAppearance.AppCompat.Body2"，它会覆盖按钮的整个主题。您只想使用android:textAppearance="@style/TextAppearance.AppCompat.Body2"覆盖文本外观。覆盖整个主题可能会产生一些奇怪的属性
    • 按钮不需要
  • android:inputType - 因为您无法在按钮中输入文本，因此设置输入类型将不会执行任何操作。
  • 使用android:layout_weight时，您应该将android:layout_height或android:layout_width设置为0dp，以指定您是想要拉伸宽度还是高度。
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