Question

我遇到以下致命错误，代码在Android 4.1和4.3上完美运行：

11-10 20:53:21.425    8940-8957/ganbi_collector.com.ganbi_collector E/NativeCrypto﹕ ssl=0x5ca3abe0 cert_verify_callback x509_store_ctx=0x5ee64ab0 arg=0x0
11-10 20:53:21.425    8940-8957/ganbi_collector.com.ganbi_collector E/NativeCrypto﹕ ssl=0x5ca3abe0 cert_verify_callback calling verifyCertificateChain authMethod=ECDHE_ECDSA
11-10 20:53:21.502    8940-8940/ganbi_collector.com.ganbi_collector E/linker﹕ load_library(linker.cpp:759): library "libmaliinstr.so" not found
11-10 20:53:21.971    8940-8940/ganbi_collector.com.ganbi_collector E/SpannableStringBuilder﹕ SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
11-10 20:53:21.972    8940-8940/ganbi_collector.com.ganbi_collector E/SpannableStringBuilder﹕ SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
11-10 20:53:22.034    8940-8940/ganbi_collector.com.ganbi_collector E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.NullPointerException
        at ganbi_collector.com.ganbi_collector.MainActivity.setUpMapIfNeeded(MainActivity.java:125)
        at ganbi_collector.com.ganbi_collector.MainActivity.onLocationChanged(MainActivity.java:311)
        at com.google.android.gms.internal.lx$a.handleMessage(Unknown Source)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:194)
        at android.app.ActivityThread.main(ActivityThread.java:5434)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:525)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:834)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
        at dalvik.system.NativeStart.main(Native Method)

以下是目标活动的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:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

<FrameLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/fragment_container">

    <fragment
        android:id="@+id/ganbi_map"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        class="com.google.android.gms.maps.MapFragment" />

</FrameLayout>

以下是造成错误的方法：

    private GoogleMap gMap;

    private void setUpMapIfNeeded() {
    // Do a null check to confirm that we have not already instantiated the map.
    if (gMap == null) {
        gMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.ganbi_map)).getMap();
        // Check if we were successful in obtaining the map.
        if (gMap != null) {
            // The Map is verified. It is now safe to manipulate the map.
            // Load map preferences
            Log.d("Info", "Map ready for initialization");
            gMap.setMyLocationEnabled(true);
            LogMe(Boolean.toString(locationTrack));
        }
    }
}

    public void onLocationChanged(Location loc) {
    //        Marks marks = new Marks();
    String msg = "Location change received: " +
            Double.toString(loc.getLatitude()) + "," +
            Double.toString(loc.getLongitude());
    LogMe(msg);

    lastLoc = new LatLng(loc.getLatitude(),loc.getLongitude());

    // Move the camera instantly to current location with a zoom of 15.
    if (gMap == null){
        setUpMapIfNeeded();
    } else {
        gMap.moveCamera(CameraUpdateFactory.newLatLngZoom(lastLoc, 15));
    //        marks.getNearMarks(lastLoc);
        getNearMarks(lastLoc);
    }

}

我正在使用Alcatel pop9和andorid 4.2.2进行调试，代码在使用Android 4.1的HTC欲望500上运行完全，并且相同的代码与Alcatel Idol x2一起使用没有任何问题。

Answer 1

@ zgc7009用他神奇的词语给出了解决方案的关键：这是一个描述在通货膨胀之前获得地图的试验案例。我试图让地图远离这场比赛，只是让这个电话在以后发生安全。

我对其与其他设备合作的原因有不同的解释：实际上这是Android开发中的主要挑战之一，其中不同的硬件具有不同的响应时间。似乎阿尔卡特pop9具有更好的GPS连接时间。我正在初始化地图获得GPS连接，这在其他测试手机上是可以的，其中GPS有足够的时间让inflater工作。

Android 4.2.2上谷歌地图v2致命错误

1 个答案: