Android 不幸的是，在ADT&x27；应用程序名称'；停止

我的代码是activity_show_location.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="40dip"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/TextView01"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="5dip"
            android:text="@string/lat"
            android:textSize="20sp" >
        </TextView>

        <TextView
            android:id="@+id/TextView02"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/unkwn"
            android:textSize="20sp" >
        </TextView>
    </LinearLayout>

    <LinearLayout
        android:id="@+id/linearLayout2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/TextView03"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="5dip"
            android:text="@string/lon"
            android:textSize="20sp" >
        </TextView>

        <TextView
            android:id="@+id/TextView04"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/unkwn"
            android:textSize="20sp" >
        </TextView>
    </LinearLayout>

</LinearLayout>

当我在ADT eclipse logcat中运行时

这是我的日志显示：

03-20 07:44:56.383: W/Trace(871): Unexpected value from nativeGetEnabledTags: 0 
03-20 07:44:56.383: W/Trace(871): Unexpected value from nativeGetEnabledTags: 0 
03-20 07:44:56.783: W/Trace(871): Unexpected value from nativeGetEnabledTags: 0 
03-20 07:44:56.783: W/Trace(871): Unexpected value from nativeGetEnabledTags: 0 
03-20 07:44:57.343: D/AndroidRuntime(871): Shutting down VM 
03-20 07:44:57.343: W/dalvikvm(871): threadid=1: thread exiting with uncaught exception (group=0x40a70930) 
03-20 07:44:57.373: E/AndroidRuntime(871): FATAL EXCEPTION: main 
03-20 07:44:57.373: E/AndroidRuntime(871): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.locationapi/com.example.locationapi.ShowLocationActivity}: java.lang.IllegalArgumentException: invalid provider: null 
03-20 07:44:57.373: E/AndroidRuntime(871):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at android.app.ActivityThread.access$600(ActivityThread.java:141) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at android.os.Handler.dispatchMessage(Handler.java:99) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at android.os.Looper.loop(Looper.java:137) 03-20 07:44:57.373: E/AndroidRuntime(871):   at android.app.ActivityThread.main(ActivityThread.java:5039) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at java.lang.reflect.Method.invoke(Method.java:511) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at dalvik.system.NativeStart.main(Native Method) 03-20 07:44:57.373: E/AndroidRuntime(871): Caused by: java.lang.IllegalArgumentException: invalid provider: null 
03-20 07:44:57.373: E/AndroidRuntime(871):  at android.location.LocationManager.checkProvider(LocationManager.java:1594) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at android.location.LocationManager.getLastKnownLocation(LocationManager.java:1138) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at com.example.locationapi.ShowLocationActivity.onCreate(ShowLocationActivity.java:32) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at android.app.Activity.performCreate(Activity.java:5104) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
03-20 07:44:57.373: E/AndroidRuntime(871):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
03-20 07:44:57.373: E/AndroidRuntime(871):  ... 11 more 
03-20 07:45:39.193: I/Process(871): Sending signal. PID: 871 SIG: 9

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当emulator以“不幸的是LocationAPI已停止”的方式运行时，我得到了答案。请告诉我解决方案。

查看这里的日志就是调试

07:44:57.373: E/AndroidRuntime(871): Caused by: java.lang.IllegalArgumentException: invalid provider: null 
03-20 07:44:57.373: E/AndroidRuntime(871): at android.location.LocationManager.checkProvider(LocationManager.java:1594)
03-20 07:44:57.373: E/AndroidRuntime(871): at android.location.LocationManager.getLastKnownLocation(LocationManager.java:1138) 
03-20 07:44:57.373: E/AndroidRuntime(871): at com.example.locationapi.ShowLocationActivity.onCreate(ShowLocationActivity.java:32)

所以在

ShowLocationActivity.java:32

Location location = locationManager.getLastKnownLocation(provider);

您提供的

提供程序

基本上为空。所以您可能需要检查它为空的可能原因

以下是您应该检查的项目列表：

是因为线吗

谁被指派过

试着给它一个默认值

此外，您不应该从子线程接触UI线程。这样做

latitudeField.setText("Location not available.");
longitudeField.setText("Location not available.");

这也不是个好主意

---

尝试使用

AsyncTask

检查您没有在模拟器中传递位置，要在模拟器中测试gps位置，您需要使用DDMS传递值

下面是你如何做到这一点的：

在eclipse中打开DDMS预览：

转到emulator控件

在“位置控制手动”选项卡中，给出lang和lat值，然后按“发送”按钮，然后启动应用程序

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让我知道它是否有效

java.lang.IllegalArgumentException:无效提供程序：NullU是否可以修改代码以尽可能运行。同样的问题也会出现“不幸的是，appname已停止”

latitudeField.setText("Location not available.");
longitudeField.setText("Location not available.");