我有错误，我不知道如何解决
我需要添加一个片段，但它不会起作用
一切都发生在void firstTime()，错误显示它就在setContentView(R.layout.activity_main);上。
我真的不知道如何解决这个问题 我尝试了很多东西，但它不起作用。
请帮助我。
MainActivity类：
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
private MapFragment mapsFragment;
static MainActivity can;
static FloatingActionButton fab;
static FloatingActionButton show;
private String encoded_string;
private Bitmap bitmap;
private String picturePath;
View rootView;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
private void initializeMapsFragment() {
FragmentTransaction mTransaction = getSupportFragmentManager().beginTransaction();
mapsFragment = new MapFragment();
SupportMapFragment supportMapFragment = mapsFragment;
mTransaction.add(R.id.map, supportMapFragment);
mTransaction.commitNow();
}
@RequiresApi(api = Build.VERSION_CODES.GINGERBREAD)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
can = this;
Log.d("--***** MAP ", "::Loading Map");
setContentView(R.layout.activity_main);
initializeMapsFragment();
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
fab = (FloatingActionButton) findViewById(R.id.fab);
show = (FloatingActionButton) findViewById(R.id.show);
show.hide();
fab.hide();
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
callPopup();
}
});
show.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
stats();
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
can, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(can);
Button searchButton = (Button) findViewById(R.id.searchButton);
searchButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
EditText searchView = (EditText) findViewById(R.id.searchView1);
String text = searchView.getText().toString();
Geocoder geocoder = new Geocoder(getBaseContext());
List<Address> addresses = null;
try {
// Getting a maximum of 3 Address that matches the input
// text
addresses = geocoder.getFromLocationName(text, 3);
if (addresses != null && !addresses.equals(""))
search(addresses);
} catch (Exception e) {
}
}
});
client = new GoogleApiClient.Builder(can).addApi(AppIndex.API).build();
}
public void start(){
setContentView(R.layout.activity_main);
initializeMapsFragment();
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
fab = (FloatingActionButton) findViewById(R.id.fab);
show = (FloatingActionButton) findViewById(R.id.show);
show.hide();
fab.hide();
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
callPopup();
}
});
show.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
stats();
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
can, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(can);
Button searchButton = (Button) findViewById(R.id.searchButton);
searchButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
EditText searchView = (EditText) findViewById(R.id.searchView1);
String text = searchView.getText().toString();
Geocoder geocoder = new Geocoder(getBaseContext());
List<Address> addresses = null;
try {
// Getting a maximum of 3 Address that matches the input
// text
addresses = geocoder.getFromLocationName(text, 3);
if (addresses != null && !addresses.equals(""))
search(addresses);
} catch (Exception e) {
}
}
});
client = new GoogleApiClient.Builder(can).addApi(AppIndex.API).build();
}
protected void search(List<Address> addresses) {
Address address = (Address) addresses.get(0);
LatLng latLng = new LatLng(address.getLatitude(), address.getLongitude());
MapFragment.mapView.moveCamera(CameraUpdateFactory.newLatLng(latLng));
MapFragment.mapView.animateCamera(CameraUpdateFactory.zoomTo(15));
}
@RequiresApi(api = Build.VERSION_CODES.GINGERBREAD)
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, 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_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@RequiresApi(api = Build.VERSION_CODES.HONEYCOMB)
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
FragmentManager fm = getFragmentManager();
android.support.v4.app.FragmentManager sFm = getSupportFragmentManager();
int id = item.getItemId();
if (id == R.id.nav_camera) {
if (!mapsFragment.isAdded())
sFm.beginTransaction().add(R.id.map, mapsFragment).commit();
else
sFm.beginTransaction().show(mapsFragment).commit();
} else if (id == R.id.nav_share) {
Intent sharingIntent = new Intent(Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
String shareBody = "Check this app out --> link.kys";
sharingIntent.putExtra(Intent.EXTRA_SUBJECT, "Best Free Parking app");
sharingIntent.putExtra(Intent.EXTRA_TEXT, shareBody);
startActivity(Intent.createChooser(sharingIntent, "Share via"));
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
public void firstTime() {
setContentView(R.layout.firsttime);
(findViewById(R.id.cancelBut))
.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
//View view = can.findViewById(android.R.id.content);
//Log.d("a", "" + ((ViewGroup)view).getChildCount() );
//((ViewGroup) view).removeView(view);
android.support.v4.app.FragmentManager sFm = getSupportFragmentManager();
sFm.beginTransaction().remove(mapsFragment).commitNow();
if(mapsFragment.isAdded()){
Log.d("--***** FRAGMENT ", "::Still On");
}
start();
}
});
}
public static void load(){
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(can);
if (!prefs.getBoolean("firstTime", false)) {
can.firstTime();
//SharedPreferences.Editor editor = prefs.edit();
//editor.putBoolean("firstTime", true);
//editor.commit();
}
}
private void stats() {
setContentView(R.layout.stats);
RatingBar ratingbar = (RatingBar) findViewById(R.id.ratingBar);
ratingbar.setRating((float) 2.0);
ratingbar.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
public void onRatingChanged(RatingBar ratingBar, float rating,
boolean fromUser) {
ratingBar.setRating((float) 2.0);
}
});
((Button) findViewById(R.id.cancBut)).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
setContentView(R.layout.content_main);
}
});
}
}
Xml文件：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/content_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.robertas.parking.bestfreeparking.MainActivity"
tools:showIn="@layout/app_bar_main">
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.robertas.parking.test.MapsActivity"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_weight="0.68" />
<EditText
android:id="@+id/searchView1"
android:inputType="textPersonName"
android:layout_width="250dp"
android:layout_height="34dp"
android:layout_marginTop="14dp"
android:hint="Search Location"
android:ems="10"
android:textColor="@android:color/black"
android:background="@android:color/white"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true">
</EditText>
<Button
android:id="@+id/searchButton"
android:layout_width="wrap_content"
android:layout_height="25dp"
android:background="@drawable/places_ic_search"
android:layout_alignBottom="@+id/searchView1"
android:layout_alignRight="@+id/searchView1"
android:layout_alignEnd="@+id/searchView1"
android:layout_alignTop="@+id/searchView1"
android:layout_marginLeft="216dp"
android:layout_marginStart="216dp"
android:layout_alignLeft="@+id/searchView1"
android:layout_alignStart="@+id/searchView1" />
</RelativeLayout>
错误：
android.view.InflateException: Binary XML file line #12: Error inflating class fragment
日志：
03-10 20:21:45.036 31937-31937/com.robertas.parking.bestfreeparking D/AndroidRuntime: Shutting down VM
03-10 20:21:45.036 31937-31937/com.robertas.parking.bestfreeparking E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.robertas.parking.bestfreeparking, PID: 31937
android.view.InflateException: Binary XML file line #12: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:916)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:802)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:916)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:802)
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.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:284)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:143)
at com.robertas.parking.bestfreeparking.MainActivity.start(MainActivity.java:161)
at com.robertas.parking.bestfreeparking.MainActivity$8.onClick(MainActivity.java:356)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
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:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.IllegalArgumentException: Binary XML file line #12: Duplicate id 0x7f0f00e8, tag null, or parent id 0x7f0f00e7 with another fragment for com.google.android.gms.maps.SupportMapFragment
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2427)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:120)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:378)
at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:33)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:77)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:733)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:916)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:802)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:916)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:802)
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.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:284)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:143)
at com.robertas.parking.bestfreeparking.MainActivity.start(MainActivity.java:161)
at com.robertas.parking.bestfreeparking.MainActivity$8.onClick(MainActivity.java:356)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
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:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
03-10 20:21:45.039 1499-1878/system_process W/ActivityManager: Force finishing activity 1 com.robertas.parking.bestfreeparking/.MainActivity
[ 03-10 20:21:45.046 1499: 1878 D/ ]
HostConnection::get() New Host Connection established 0x7ffc98084ec0, tid 1878
03-10 20:21:45.051 1123-1123/? E/EGL_emulation: tid 1123: eglCreateSyncKHR(1299): error 0x3004 (EGL_BAD_ATTRIBUTE)
03-10 20:21:45.152 1499-1558/system_process I/OpenGLRenderer: Initialized EGL, version 1.4
03-10 20:21:45.194 1499-1558/system_process W/EGL_emulation: eglSurfaceAttrib not implemented
03-10 20:21:45.194 1499-1558/system_process W/OpenGLRenderer: Failed to set EGL_SWAP_BEHAVIOR on surface 0x7ffca953fb40, error=EGL_SUCCESS
03-10 20:21:45.612 1499-1518/system_process W/ActivityManager: Activity pause timeout for ActivityRecord{38e88b4d u0 com.robertas.parking.bestfreeparking/.MainActivity t155 f}
03-10 20:21:45.645 1756-2040/com.google.android.googlequicksearchbox W/EGL_emulation: eglSurfaceAttrib not implemented
03-10 20:21:45.645 1756-2040/com.google.android.googlequicksearchbox W/OpenGLRenderer: Failed to set EGL_SWAP_BEHAVIOR on surface 0xe1c93620, error=EGL_SUCCESS
03-10 20:21:46.616 1622-1622/com.android.systemui W/ResourceType: No package identifier when getting value for resource number 0x00000000
03-10 20:21:46.616 1622-1622/com.android.systemui W/PackageManager: Failure retrieving resources for com.robertas.parking.bestfreeparking: Resource ID #0x0
03-10 20:21:46.832 1756-1756/com.google.android.googlequicksearchbox I/Choreographer: Skipped 69 frames! The application may be doing too much work on its main thread.
03-10 20:21:47.332 1756-2040/com.google.android.googlequicksearchbox W/OpenGLRenderer: Incorrectly called buildLayer on View: aep, destroying layer...
03-10 20:21:47.448 1499-1577/system_process W/AudioTrack: AUDIO_OUTPUT_FLAG_FAST denied by client
03-10 20:21:47.465 31937-31937/? I/Process: Sending signal. PID: 31937 SIG: 9
03-10 20:21:47.474 1499-14634/system_process I/WindowState: WIN DEATH: Window{394fad98 u0 com.robertas.parking.bestfreeparking/com.robertas.parking.bestfreeparking.MainActivity}
03-10 20:21:47.474 1499-1874/system_process I/ActivityManager: Process com.robertas.parking.bestfreeparking (pid 31937) has died
03-10 20:21:47.475 1499-1874/system_process W/ActivityManager: Scheduling restart of crashed service com.robertas.parking.bestfreeparking/com.android.tools.fd.runtime.InstantRunService in 1000ms
03-10 20:21:47.480 1123-1123/? W/SurfaceFlinger: couldn't log to binary event log: overflow.
03-10 20:21:47.521 1499-1558/system_process D/OpenGLRenderer: endAllStagingAnimators on 0x7ffc9dfec000 (RippleDrawable) with handle 0x7ffca9734500
03-10 20:21:47.525 1499-1753/system_process W/InputMethodManagerService: Got RemoteException sending setActive(false) notification to pid 31937 uid 10058
03-10 20:21:47.537 1956-32415/com.google.android.googlequicksearchbox:search I/HotwordRecognitionRnr: Starting hotword detection.
03-10 20:21:47.537 1956-32414/com.google.android.googlequicksearchbox:search I/MicrophoneInputStream: mic_starting gzi@c6aa4d0
03-10 20:21:47.568 1135-1912/? E/audio_hw_generic: Error opening input stream format 1, channel_mask 0010, sample_rate 16000
03-10 20:21:47.569 1135-32418/? I/AudioFlinger: AudioFlinger's thread 0xf59c4000 ready to run
03-10 20:21:47.581 2146-32417/com.google.android.gms W/IcingInternalCorpora: getNumBytesRead when not calculated.
03-10 20:21:47.584 1956-32414/com.google.android.googlequicksearchbox:search I/MicrophoneInputStream: mic_started gzi@c6aa4d0
03-10 20:21:47.602 1956-1956/com.google.android.googlequicksearchbox:search I/HotwordWorker: onReady
03-10 20:21:47.629 2146-2248/com.google.android.gms W/Settings: Setting adb_enabled has moved from android.provider.Settings.Secure to android.provider.Settings.Global.
03-10 20:21:47.629 2146-2248/com.google.android.gms I/Icing: Usage reports 1 indexed 1 rejected 0 imm upload true
03-10 20:21:47.634 2146-2248/com.google.android.gms W/Icing: App history upload skipped 1 0 0
03-10 20:21:48.101 1135-1535/? W/AudioFlinger: write blocked for 469 msecs, 16 delayed writes, thread 0xf58ac000
03-10 20:21:48.503 32429-32429/? I/art: Not late-enabling -Xcheck:jni (already on)
03-10 20:21:48.507 1499-1518/system_process I/ActivityManager: Start proc 32429:com.robertas.parking.bestfreeparking/u0a58 for service com.robertas.parking.bestfreeparking/com.android.tools.fd.runtime.InstantRunService
03-10 20:21:48.775 32429-32429/com.robertas.parking.bestfreeparking I/FirebaseInitProvider: FirebaseApp initialization unsuccessful
03-10 20:21:48.777 32429-32429/com.robertas.parking.bestfreeparking I/InstantRun: Starting Instant Run Server for com.robertas.parking.bestfreeparking
03-10 20:21:48.777 1499-14635/system_process W/ActivityManager: getRunningAppProcesses: caller 10058 does not hold REAL_GET_TASKS; limiting output
答案 0 :(得分：0)
确保在build.gradle文件中编译com.google.android.gms.maps。如果它不存在，请将其添加到依赖项中：
dependencies {
<other dependencies>
compile 'com.google.android.gms:play-services-maps:10.2.0'
}
请记住在java文件中导入它：
import com.google.android.gms.maps.SupportMapFragment;
关于工具：上下文，它应该是.MainActivity
答案 1 :(得分：0)
所有事情都发生在firstTime（）void中，错误显示它在线setContentView（R.layout.activity_main）;。
你不能这样做。
start()和firstTime()不是您的活动/应用的入口点
onCreate()是，是您只能致电setContentView(R.layout.activity_main)的地方。
即便如此，“加载”任何活动的static方法都无效。
public static void load(){
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(can);
if (!prefs.getBoolean("firstTime", false)) {
can.firstTime(); // This doesn't work like this
}
}
特别是如果你在其他课程的其他地方MainActivity.load()。
阅读您的错误，请参阅start() - ＆gt; setContentView()导致问题......
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:143)
at com.robertas.parking.bestfreeparking.MainActivity.start(MainActivity.java:161)
at com.robertas.parking.bestfreeparking.MainActivity$8.onClick(MainActivity.java:356)
at android.view.View.performClick(View.java:4780)
真正的错误消息
将id为0x7f0f00e8，标记为null或父ID为0x7f0f00e7与com.google.android.gms.maps.SupportMapFragment
的另一个片段重复
意味着片段"@+id/maps"已经添加到Activity类的FragmentManger中，因此它已被复制。
理想情况下，活动不应在setContentView之外调用onCreate。
原因=您致电setContentView，因此完全从根视图中删除MapFragment（和其他视图），因此 1） FragmentManger无法找到以前添加的任何内容， 2）您之前使用findViewById的任何视图（可能）都不再存在。
如果您想“替换”某些Activity的内容，那么您应该使用Fragments + FrameLayout + FragmentTransaction.replace()方法调用。