用另一个Activity的MapFragment开始活动 [英] Start Activity with MapFragment from another Activity
问题描述
我开发了一个应用程序,我需要用一个简单的按钮从我的菜单开始一个新的活动。我做了几个测试,并注意到如果我设置包含MapFragment的Activity的意图过滤器如下: android:name =android.intent.action.MAIN/>
< category android:name =android.intent.category.LAUNCHER/>
这个工作正常,没有任何崩溃。
如果改为修改意图过滤器,以便在您打开应用程序时不立即启动活动,特别是如下编辑:
< action android:name =com.hpdev.maps.MYMAP/>
< category android:name =android.intent.category.DEFAULT/>
活动未启动,应用程序崩溃。我该如何解决这个错误?
我的代码放在我的activity.java中:
public class MyMap extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_main);
$ b $}}
我的堆栈跟踪:
04-03 20:49:57.637:E / AndroidRuntime(28889):致命例外:main
04-03 20:49:57.637:E / AndroidRuntime(28889):进程:com.fziviello.altamuragroup,PID:28889
04-03 20:49:57.637:E / AndroidRuntime(28889):java.lang.RuntimeException:无法启动活动ComponentInfo {com .fziviello.altamuragroup / com.fziviello.altamuragroup.DoveSono}:android.view.InflateException:二进制XML文件行#9:错误膨胀类片段
04-03 20:49:57.637:E / AndroidRuntime(28889) :at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2227)
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2277 )
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.app.ActivityThread.access $ 800(ActivityThread.java:145)
04-03 20:49:57.637: E / AndroidRuntime(28889):在android.app.ActivityThread $ H.handleMe ssage(ActivityThread.java:1206)
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.os.Handler.dispatchMessage(Handler.java:102)
04-03 20/49:57.637:E / AndroidRuntime(28889):在android.os.Looper.loop(Looper.java:136)
04-03 20:49:57.637:E / AndroidRuntime(28889):在android .app.ActivityThread.main(ActivityThread.java:5088)
04-03 20:49:57.637:E / AndroidRuntime(28889):at java.lang.reflect.Method.invokeNative(Native Method)
04-03 20:49:57.637:E / AndroidRuntime(28889):在java.lang.reflect.Method.invoke(Method.java:515)
04-03 20:49:57.637:E / AndroidRuntime (28889):at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:791)
04-03 20:49:57.637:E / AndroidRuntime(28889):at com.android。 internal.os.ZygoteInit.main(ZygoteInit.java:607)
04-03 20:49:57.637:E / AndroidRuntime(28889):在de.robv.android.xposed.XposedBridge.main(XposedBridge.java :126)
04-03 20:49:57.637:E / AndroidRuntime(28889):在达尔维克.system.NativeStart.main(本地方法)
04-03 20:49:57.637:E / AndroidRuntime(28889):导致:android.view.InflateException:二进制XML文件行#9:错误的扩展类片段
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
04-03 20:49:57.637:E / AndroidRuntime(28889):在android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.view.LayoutInflater.inflate(LayoutInflater .java:492)
04-03 20:49:57.637:E / AndroidRuntime(28889):at de.robv.android.xposed.XposedBridge.invokeOriginalMethodNative(Native Method)
04-03 20: 49:57.637:E / AndroidRuntime(28889):在de.robv.android.xposed.XposedBridge.handleHookedMethod(XposedBridge.java:547)
04-03 20:49:57.637:E / AndroidRuntime(28889): at android.view.LayoutInflater.inflate(Native Method)
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.view.Layout Inflater.inflate(LayoutInflater.java:397)
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
04 -03 20:49:57.637:E / AndroidRuntime(28889):at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:344)
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.app.Activity.setContentView(Activity.java:1952)
04-03 20:49:57.637:E / AndroidRuntime(28889):at com.fziviello.altamuragroup.DoveSono。 onCreate(DoveSono.java:37)
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.app.Activity.performCreate(Activity.java:5434)
04-03 20/49:57.637:E / AndroidRuntime(28889):at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
04-03 20:49:57.637:E / AndroidRuntime(28889):at android .app.ActivityThread.performLaunchActivity(ActivityThread.java:2181)
04-03 20:49:57.637:E / AndroidRuntime(28889):... 12 more
04-03 20:49:57.637 :E / Andro idRuntime(28889):导致:android.app.Fragment $ InstantiationException:无法实例化com.google.android.gms.maps.MapFragment片段:确保类名存在,是公共的,并有一个空的构造函数是公共
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.app.Fragment.instantiate(Fragment.java:597)
04-03 20:49:57.637:E / AndroidRuntime (28889):at android.app.Fragment.instantiate(Fragment.java:561)
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.app.Activity.onCreateView(Activity。
04-03 20:49:57.637:E / AndroidRuntime(28889):at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
04-03 20:49: 57.637:E / AndroidRuntime(28889):... 25更多
04-03 20:49:57.637:E / AndroidRuntime(28889):引起:java.lang.ClassNotFoundException:未找到类com .google.android.gms.maps.MapFragment的路径:DexPathList [[zip文件/data/app/com.fziviello.altamuragroup-1.apk\"],nativeLibraryDire ctories = [/ data / app-lib / com.fziviello.altamuragroup-1,/ vendor / lib,/ system / lib]]
04-03 20:49:57.637:E / AndroidRuntime(28889):at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
04-03 20:49:57.637:E / AndroidRuntime(28889):at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
04-03 20:49:57.637:E / AndroidRuntime(28889):在java.lang.ClassLoader.loadClass(ClassLoader.java:457)
04-03 20:49:57.637:E / AndroidRuntime (28889):at android.app.Fragment.instantiate(Fragment.java:583)
04-03 20:49:57.637:E / AndroidRuntime(28889):... 28 more
如果您只需开始一个新的活动
只需在按钮中创建一个明确指向 Activity
的 Intent
onClickListener。以下是在 Fragment
的按钮中定义的onClickListener:
mButton.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v){
Intent intent = new Intent(getActivity(),MapActivity.class);
startActivity(intent);
}
});
您需要确保所有人活动
在 AndroidManifest.xml
中注册,但它们并不都需要意图过滤器。您需要活动
中的Main / Launcher intent过滤器来打开启动器图标,但其他 Activities
不需要意图过滤器,因为当我在上面的代码中进行操作时,您可以明确地引用它们。
I developed an application and I need to start a new activity from my menu with a simple button. I made several tests and noticed that if I set the intent-filter of Activity that contains the MapFragment as follows:
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
this works fine without any crashes. If instead modify the intent-filter in such a way as not to start the Activity soon as you open the app and in particular the edit as follows:
<action android:name="com.hpdev.maps.MYMAP" />
<category android:name="android.intent.category.DEFAULT" />
The activity is not started and the app crashes. How can I fix this bug? I include the code in my activity.java:
public class MyMap extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_main);
}}
My stacktrace:
04-03 20:49:57.637: E/AndroidRuntime(28889): FATAL EXCEPTION: main
04-03 20:49:57.637: E/AndroidRuntime(28889): Process: com.fziviello.altamuragroup, PID: 28889
04-03 20:49:57.637: E/AndroidRuntime(28889): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.fziviello.altamuragroup/com.fziviello.altamuragroup.DoveSono}: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2227)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2277)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.ActivityThread.access$800(ActivityThread.java:145)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1206)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.os.Handler.dispatchMessage(Handler.java:102)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.os.Looper.loop(Looper.java:136)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.ActivityThread.main(ActivityThread.java:5088)
04-03 20:49:57.637: E/AndroidRuntime(28889): at java.lang.reflect.Method.invokeNative(Native Method)
04-03 20:49:57.637: E/AndroidRuntime(28889): at java.lang.reflect.Method.invoke(Method.java:515)
04-03 20:49:57.637: E/AndroidRuntime(28889): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
04-03 20:49:57.637: E/AndroidRuntime(28889): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
04-03 20:49:57.637: E/AndroidRuntime(28889): at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:126)
04-03 20:49:57.637: E/AndroidRuntime(28889): at dalvik.system.NativeStart.main(Native Method)
04-03 20:49:57.637: E/AndroidRuntime(28889): Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
04-03 20:49:57.637: E/AndroidRuntime(28889): at de.robv.android.xposed.XposedBridge.invokeOriginalMethodNative(Native Method)
04-03 20:49:57.637: E/AndroidRuntime(28889): at de.robv.android.xposed.XposedBridge.handleHookedMethod(XposedBridge.java:547)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.view.LayoutInflater.inflate(Native Method)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
04-03 20:49:57.637: E/AndroidRuntime(28889): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:344)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.Activity.setContentView(Activity.java:1952)
04-03 20:49:57.637: E/AndroidRuntime(28889): at com.fziviello.altamuragroup.DoveSono.onCreate(DoveSono.java:37)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.Activity.performCreate(Activity.java:5434)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2181)
04-03 20:49:57.637: E/AndroidRuntime(28889): ... 12 more
04-03 20:49:57.637: E/AndroidRuntime(28889): Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.MapFragment: make sure class name exists, is public, and has an empty constructor that is public
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.Fragment.instantiate(Fragment.java:597)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.Fragment.instantiate(Fragment.java:561)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.Activity.onCreateView(Activity.java:4816)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
04-03 20:49:57.637: E/AndroidRuntime(28889): ... 25 more
04-03 20:49:57.637: E/AndroidRuntime(28889): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.maps.MapFragment" on path: DexPathList[[zip file "/data/app/com.fziviello.altamuragroup-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.fziviello.altamuragroup-1, /vendor/lib, /system/lib]]
04-03 20:49:57.637: E/AndroidRuntime(28889): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
04-03 20:49:57.637: E/AndroidRuntime(28889): at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
04-03 20:49:57.637: E/AndroidRuntime(28889): at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
04-03 20:49:57.637: E/AndroidRuntime(28889): at android.app.Fragment.instantiate(Fragment.java:583)
04-03 20:49:57.637: E/AndroidRuntime(28889): ... 28 more
If all you need to do is start a new Activity
from a button, just create an Intent
that explicitly points to that Activity
in the button's onClickListener. The below is an onClickListener defined in a Fragment
's button:
mButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(getActivity(), MapActivity.class);
startActivity(intent);
}
});
You need to make sure that all of you Activity
's are registered in the AndroidManifest.xml
, but they don't all require intent filters. You will need the Main/ Launcher intent filter in the Activity
that you want the launcher icon to open, but other Activities
don't require intent filters because you can explicitly reference them as I dide in the code above.
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