如何在另一个活动中单击按钮时在一个活动中创建地图活动？

【问题标题】：How to create a map activity in one activity on button click in other activity?如何在另一个活动中单击按钮时在一个活动中创建地图活动？
【发布时间】：2014-07-26 07:31:56
【问题描述】：

我正在为一所大学创建一个 android 应用程序。我试图通过单击其他活动中的按钮在一个活动中显示位置图。我已经参考了一些链接并且工作了，但是我收到了错误。这是我的代码 sn-p 和 Logcat。请任何人帮助我完成这项工作。

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.example.university"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" />

<permission
    android:name="com.example.university.permission.MAPS_RECEIVE"
    android:protectionLevel="signature" />

<uses-permission android:name="com.example.university.permission.MAPS_RECEIVE" />
<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" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

<uses-feature android:glEsVersion="0x00000000" android:required="true" />

<meta-data android:name="com.google.android.maps.v2.API_KEY"
    android:value="AIzaSyDGPcb88FGrYilWxe41RbWog38pSgNfp5o" />

<application android:allowBackup="true" android:icon="@drawable/launcher"
    android:theme="@style/Theme.AppCompat.Light" >
<activity android:name=".MainActivity" android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".About" android:label="@string/title_activity_about" >
</activity>
<activity android:name=".Chancellor"           android:label="@string/title_activity_chancellor" >
</activity>
<activity android:name=".Prochancellor"            android:label="@string/title_activity_prochancellor" >
</activity>
<activity android:name=".Programs"           android:label="@string/title_activity_programs" >
</activity>
<activity android:name=".Contact"           android:label="@string/title_activity_contact" >
</activity>
<activity android:name=".SplashActivity"            android:label="@string/title_activity_splash" >
</activity>
<activity android:name=".Admissions"             android:label="@string/title_activity_admissions" >
</activity>
<activity android:name=".Map" android:label="@string/title_activity_map" >
</activity>
</application>
</manifest>

此 .JAVA 和 .XML 文件用于按钮和单击功能的工作

Contact.java

package com.example.university;

import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.view.View.OnClickListener;



public class Contact extends ActionBarActivity {
Button button;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
// Get the view from activity_contact.xml
    setContentView(R.layout.activity_contact);

// Locate the button in activity_contact.xml
    button = (Button)findViewById(R.id.button1);

// Capture button clicks
    button.setOnClickListener(new OnClickListener() {
        public void onClick(View arg0) {


// Start NewActivity.class
            Intent myIntent = new Intent(Contact.this,
                    Map.class);
            startActivity(myIntent);
}
});
}

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

switch (item.getItemId()) {

case R.id.about:
Intent a = new Intent(getApplicationContext(), About.class);
startActivity(a);
return true;    

case R.id.chancellor:
Intent b = new Intent(getApplicationContext(), Chancellor.class);
startActivity(b);
return true;

case R.id.prochancellor:
Intent c = new Intent(getApplicationContext(), Prochancellor.class);
startActivity(c);
return true;

case R.id.programs:
Intent d = new Intent(getApplicationContext(), Programs.class);
startActivity(d);
return true; 

case R.id.admissions:
Intent e = new Intent(getApplicationContext(), Admissions.class);
startActivity(e);
return true;

case R.id.contact:
Intent f = new Intent(getApplicationContext(), Contact.class);
startActivity(f);
return true;

default:

return super.onOptionsItemSelected(item);
}
}
}

activity_contact.xml

<RelativeLayout 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:background="@drawable/tiny_grid"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.university.Contact" >

<ImageView
    android:id="@+id/imageView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:src="@drawable/campus1" />

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignTop="@+id/imageView1"
    android:layout_marginLeft="26dp"
    android:layout_toRightOf="@+id/imageView1"
    android:text="100 Feet Ring Road, BSK III Stage, Bangalore-560085"
    android:textSize="11dp" />

<TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView1"
    android:layout_below="@+id/textView1"
    android:text="+91 80 26721983"
    android:textSize="11dp" />

<TextView
    android:id="@+id/textView3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView2"
    android:layout_below="@+id/textView2"
    android:text="+91 80 26722108"
    android:textSize="11dp" />

<TextView
    android:id="@+id/textView4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView3"
    android:layout_below="@+id/textView3"
    android:autoLink="email"
    android:text="admissions@pes.edu"
    android:textSize="11dp" />

<ImageView
    android:id="@+id/imageView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/imageView1"
    android:layout_marginTop="20dp"
    android:layout_toLeftOf="@+id/textView1"
    android:src="@drawable/campus2" />

<TextView
    android:id="@+id/textView5"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView4"
    android:layout_alignTop="@+id/imageView2"
    android:text=" Hosur Road Campus (1 Km before Electronic City), Bangalore - 560 100"
    android:textSize="11dp" />

<TextView
    android:id="@+id/textView6"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView5"
    android:layout_below="@+id/textView5"
    android:text="+91 80 66186610"
    android:textSize="11dp" />

<TextView
    android:id="@+id/textView7"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView6"
    android:layout_below="@+id/textView6"
    android:text="+91 80 66186611"
    android:textSize="11dp" />

<TextView
    android:id="@+id/textView8"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView7"
    android:layout_below="@+id/textView7"
    android:autoLink="email"
    android:text="admissions@pes.edu"
    android:textSize="11dp" />

<ImageView
    android:id="@+id/imageView3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/imageView2"
    android:layout_marginTop="25dp"
    android:layout_toLeftOf="@+id/textView1"
    android:src="@drawable/campus3" />

<TextView
    android:id="@+id/textView9"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView8"
    android:layout_alignTop="@+id/imageView3"
    android:text="National Highway 219, Kuppam, Andhra Pradesh - 517 425"
    android:textSize="11dp" />

<TextView
    android:id="@+id/textView10"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView9"
    android:layout_below="@+id/textView9"
    android:text="085 70 256736"
    android:textSize="11dp" />

<TextView
    android:id="@+id/textView11"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView10"
    android:layout_below="@+id/textView10"
    android:autoLink="email"
    android:text="admissions@pes.edu"
    android:textSize="11dp" />

<ImageView
    android:id="@+id/imageView4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/imageView3"
    android:layout_marginTop="20dp"
    android:layout_toLeftOf="@+id/textView1"
    android:src="@drawable/campus4" />

<TextView
    android:id="@+id/textView12"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView11"
    android:layout_alignTop="@+id/imageView4"
    android:text="100 Feet Ring Road, BSK III Stage, Bangalore-560085"
    android:textSize="11dp" />

<TextView
    android:id="@+id/textView13"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView12"
    android:layout_below="@+id/textView12"
    android:text="+91 80 26721983"
    android:textSize="11dp" />

<TextView
    android:id="@+id/textView14"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView13"
    android:layout_below="@+id/textView13"
    android:text="+91 80 26722108"
    android:textSize="11dp" />

<TextView
    android:id="@+id/textView15"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView14"
    android:layout_below="@+id/textView14"
    android:autoLink="email"
    android:text="admissions@pes.edu"
    android:textSize="11dp" />

<Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/imageView4"
    android:layout_alignParentBottom="true"
    android:layout_marginLeft="16dp"
    android:text="Button" />

</RelativeLayout>

此 .JAVA NAD .XML 文件显示地图

package com.example.university;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;


import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.util.Log;
import android.widget.Toast;

public class Map extends ActionBarActivity {

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

    int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());

    if (resultCode == ConnectionResult.SUCCESS){
           Toast.makeText(getApplicationContext(), 
             "isGooglePlayServicesAvailable SUCCESS", 
             Toast.LENGTH_LONG).show();
          }else{

          }
}



@Override
protected void onResume() {
    // TODO Auto-generated method stub
    super.onResume();

    int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());

      if (resultCode == ConnectionResult.SUCCESS){
       Toast.makeText(getApplicationContext(), 
         "isGooglePlayServicesAvailable SUCCESS", 
         Toast.LENGTH_LONG).show();

       Log.v(">>>>>>>>>>>>>.", "successs");
      }else{

      }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.map, 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.
switch (item.getItemId()) {

case R.id.about:
Intent a = new Intent(getApplicationContext(), About.class);
startActivity(a);
return true;    

case R.id.chancellor:
Intent b = new Intent(getApplicationContext(), Chancellor.class);
startActivity(b);
return true;

case R.id.prochancellor:
Intent c = new Intent(getApplicationContext(), Prochancellor.class);
startActivity(c);
return true;

case R.id.programs:
Intent d = new Intent(getApplicationContext(), Programs.class);
startActivity(d);
return true; 

case R.id.admissions:
Intent e = new Intent(getApplicationContext(), Admissions.class);
startActivity(e);
return true;

case R.id.contact:
Intent f = new Intent(getApplicationContext(), Contact.class);
startActivity(f);
return true;

default:

return super.onOptionsItemSelected(item);
    }
}
}

Aactivity_map.xml

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.university.Map" >

<fragment
   android:id="@+id/map"
   android:name="com.google.android.gms.maps.SupportMapFragment"
   android:layout_width="match_parent"
   android:layout_height="match_parent"/>    

</RelativeLayout>

当我点击activity_contact.xml中的按钮时，这里是Logcat

07-26 02:22:16.012: I/Process(2244): Sending signal. PID: 2244 SIG: 9
07-26 02:22:20.062: D/dalvikvm(2268): GC_FOR_ALLOC freed 86K, 7% free 2998K/3200K, paused 221ms, total 269ms
07-26 02:22:20.292: I/dalvikvm-heap(2268): Grow heap (frag case) to 6.783MB for 3932172-byte allocation
07-26 02:22:20.372: D/dalvikvm(2268): GC_FOR_ALLOC freed 2K, 3% free 6835K/7044K, paused 79ms, total 79ms
07-26 02:22:21.552: D/gralloc_goldfish(2268): Emulator without GPU emulation detected.
07-26 03:10:59.626: D/dalvikvm(2376): GC_FOR_ALLOC freed 90K, 7% free 2997K/3204K, paused 191ms, total 202ms
07-26 03:10:59.876: I/dalvikvm-heap(2376): Grow heap (frag case) to 6.782MB for 3932172-byte allocation
07-26 03:11:00.126: D/dalvikvm(2376): GC_FOR_ALLOC freed 2K, 4% free 6835K/7048K, paused 248ms, total 248ms
07-26 03:11:07.206: D/gralloc_goldfish(2376): Emulator without GPU emulation detected.
07-26 03:11:09.626: D/dalvikvm(2376): GC_FOR_ALLOC freed 57K, 3% free 7068K/7260K, paused 31ms, total 36ms
07-26 03:11:09.896: I/Choreographer(2376): Skipped 58 frames!  The application may be doing too much work on its main thread.
07-26 03:11:10.356: I/Choreographer(2376): Skipped 38 frames!  The application may be doing too much work on its main thread.
07-26 03:11:21.527: D/dalvikvm(2376): GC_FOR_ALLOC freed 1266K, 17% free 7055K/8436K, paused 173ms, total 176ms
07-26 03:11:25.347: D/AndroidRuntime(2376): Shutting down VM
07-26 03:11:25.357: W/dalvikvm(2376): threadid=1: thread exiting with uncaught exception (group=0xb0cefb20)
07-26 03:11:25.397: E/AndroidRuntime(2376): FATAL EXCEPTION: main
07-26 03:11:25.397: E/AndroidRuntime(2376): Process: com.example.university, PID: 2376
07-26 03:11:25.397: E/AndroidRuntime(2376): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.university/com.example.university.Map}: android.view.InflateException: Binary XML file line #11: Error inflating class fragment
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.ActivityThread.access$800(ActivityThread.java:135)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.os.Handler.dispatchMessage(Handler.java:102)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.os.Looper.loop(Looper.java:136)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.ActivityThread.main(ActivityThread.java:5017)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at java.lang.reflect.Method.invokeNative(Native Method)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at java.lang.reflect.Method.invoke(Method.java:515)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at dalvik.system.NativeStart.main(Native Method)
07-26 03:11:25.397: E/AndroidRuntime(2376): Caused by: android.view.InflateException: Binary XML file line #11: Error inflating class fragment
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.Activity.setContentView(Activity.java:1929)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.support.v7.app.ActionBarActivity.superSetContentView(ActionBarActivity.java:217)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.support.v7.app.ActionBarActivityDelegateICS.setContentView(ActionBarActivityDelegateICS.java:110)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:77)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at com.example.university.Map.onCreate(Map.java:20)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.Activity.performCreate(Activity.java:5231)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
07-26 03:11:25.397: E/AndroidRuntime(2376):     ... 11 more
07-26 03:11:25.397: E/AndroidRuntime(2376): Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.SupportMapFragment: make sure class name exists, is public, and has an empty constructor that is public
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.Fragment.instantiate(Fragment.java:597)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.Fragment.instantiate(Fragment.java:561)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.Activity.onCreateView(Activity.java:4778)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
07-26 03:11:25.397: E/AndroidRuntime(2376):     ... 24 more
07-26 03:11:25.397: E/AndroidRuntime(2376): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.maps.SupportMapFragment" on path: DexPathList[[zip file "/data/app/com.example.university-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.university-2, /system/lib]]
07-26 03:11:25.397: E/AndroidRuntime(2376):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
07-26 03:11:25.397: E/AndroidRuntime(2376):     at android.app.Fragment.instantiate(Fragment.java:583)
07-26 03:11:25.397: E/AndroidRuntime(2376):     ... 27 more

【问题讨论】：

  • 您是否正在使用您的项目编译 Google Play 服务库？
  • 有一个错误“com.google.android.gms.maps.SupportMapFragment”，请检查你的项目中是否包含了这个类
  • @Charlesjean，我在我的项目中包含了这个类，但 Logcat 仍然出现！我哪里错了？
  • 是否包含支持库，我认为 SupportMapFragment 在支持库 V4 中。
  • @Charlesjean，在我的 Project->Properties->Android->com.google.android.gms.maps.MapFragment 中没有添加为库文件。我想这是我卡住的地方？帮帮我！

标签： java android xml button map


【解决方案1】：

您做错了一些事情，因为您可能没有按照在您的应用程序上使用 Google 地图的所有步骤操作：

  1. Google Maps API 密钥应该位于清单中的应用程序标签内。

  2. 您缺少播放服务元标记（也在应用程序标记内）：

    <meta-data
    android:name="com.google.android.gms.version"
    android:value="@integer/google_play_services_version" />

还要确保您正在使用您的项目编译播放服务。如果您使用的是 Android-Studio，那么 build.gradle 文件的底部应如下所示：

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:20.+'
    compile 'com.google.android.gms:play-services:5.0.77'
}

【讨论】：

  • 你的意思是我必须用你提到的代码替换它？
  • 不，我的意思是将 API 密钥和我提供的其他元标记移动到应用程序标记内部：&lt;application&gt;here&lt;/application&gt;
  • @Web 同样的错误？尝试将片段的名称字段更改为android:name="com.google.android.gms.maps.MapFragment"
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