Java 如何将按钮放入浮动按钮中？
我似乎不知道该怎么办。单击浮动按钮后，我的应用程序崩溃，因为我没有在清单中声明SecondActivity.java 这里是activity_maps.xmlJava 如何将按钮放入浮动按钮中？,java,android,google-maps,android-maps-v2,Java,Android,Google Maps,Android Maps V2,我似乎不知道该怎么办。单击浮动按钮后，我的应用程序崩溃，因为我没有在清单中声明SecondActivity.java 这里是activity_maps.xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schema
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MapsActivity">
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MapsActivity"
tools:layout="@android:layout/simple_spinner_dropdown_item" />
<ImageButton
android:layout_width="65dp"
android:layout_height="65dp"
android:id="@+id/imagebutton"
android:src="@drawable/ic_pin_drop_black_24dp"
/>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MapsActivity"
tools:layout="@android:layout/simple_spinner_dropdown_item" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="Lagos Mainland"
android:padding="8dp"
android:background="#53fed0"
android:id="@+id/buttonMaps"
android:layout_marginLeft="90dp"
android:layout_marginStart="90dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hospital"
android:id="@+id/buttonMaps2"
android:layout_marginTop="35dp"
android:layout_below="@+id/buttonMaps"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:clickable="true"
android:background="@color/colorAccent" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Bus Stops"
android:id="@+id/buttonMaps3"
android:clickable="true"
android:layout_marginTop="35dp"
android:background="@color/colorAccent"
android:layout_below="@+id/buttonMaps2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Taxi"
android:id="@+id/buttonMaps4"
android:layout_below="@+id/buttonMaps3"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="35dp"
android:clickable="true"
android:background="@color/colorAccent" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Gas Station"
android:id="@+id/buttonMaps5"
android:layout_marginTop="35dp"
android:clickable="true"
android:background="@color/colorAccent"
android:layout_below="@+id/buttonMaps4"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Park"
android:id="@+id/buttonMaps6"
android:layout_marginTop="35dp"
android:clickable="true"
android:background="@color/colorAccent"
android:layout_below="@+id/buttonMaps5"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.multidex.myapplication">
android:theme="@android:style/AppTheme"
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<!--
The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
Google Maps Android API v2, but you must specify either coarse or fine
location permissions for the 'MyLocation' functionality.
-->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="Android Map"
android:supportsRtl="true"
android:theme="@style/AppTheme">
android:name="android.support.multidex.MultiDexApplication">
<!--
The API key for Google Maps-based APIs is defined as a string resource.
(See the file "res/values/google_maps_api.xml").
Note that the API key is linked to the encryption key used to sign the APK.
You need a different API key for each encryption key, including the release key that is used to
sign the APK for publishing.
You can define the keys for the debug and release targets in src/debug/ and src/release/.
-->
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="" />
<activity
android:name=".MapsActivity"
android:label="Map">
<activity
android:name=".SecondActivity"/>
</activity>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</application>
</manifest>
您在清单中以错误的方式声明了您的活动，请执行以下操作：
<activity
android:name=".MapsActivity"
android:label="Map">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SecondActivity"/>
浮动按钮第二个活动 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.multidex.myapplication">
android:theme="@android:style/AppTheme"
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<!--
The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
Google Maps Android API v2, but you must specify either coarse or fine
location permissions for the 'MyLocation' functionality.
-->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="Android Map"
android:supportsRtl="true"
android:theme="@style/AppTheme">
android:name="android.support.multidex.MultiDexApplication">
<!--
The API key for Google Maps-based APIs is defined as a string resource.
(See the file "res/values/google_maps_api.xml").
Note that the API key is linked to the encryption key used to sign the APK.
You need a different API key for each encryption key, including the release key that is used to
sign the APK for publishing.
You can define the keys for the debug and release targets in src/debug/ and src/release/.
-->
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="" />
<activity
android:name=".MapsActivity"
android:label="Map">
<activity
android:name=".SecondActivity"/>
</activity>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</application>
</manifest>
FATAL EXCEPTION: main
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.user.naviapp/com.example.user.naviapp.SecondActivity}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1512)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1388)
at android.app.Activity.startActivityForResult(Activity.java:3190)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:871)
at android.app.Activity.startActivity(Activity.java:3297)
at com.example.user.naviapp.MapsActivity$1.onClick(MapsActivity.java:49)
at android.view.View.performClick(View.java:3558)
at android.view.View$PerformClick.run(View.java:14157)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4514)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
at dalvik.system.NativeStart.main(Native Method)
<activity
android:name=".MapsActivity"
android:label="Map">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SecondActivity"/>