初学者问题

Question

把log和布局文件发出来 不然没法看

Answer 1

遇到问题一定要先看log定位代码。要不然怎么改bug。

Answer 2

04-25 04:26:53.659: E/AndroidRuntime(3823): FATAL EXCEPTION: main
04-25 04:26:53.659: E/AndroidRuntime(3823): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.liyanxing/com.example.liyanxing.MainActivity}: java.lang.IllegalArgumentException: column 'number' does not exist
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.app.ActivityThread.access$600(ActivityThread.java:141)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.os.Handler.dispatchMessage(Handler.java:99)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.os.Looper.loop(Looper.java:137)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.app.ActivityThread.main(ActivityThread.java:5041)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at java.lang.reflect.Method.invokeNative(Native Method)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at java.lang.reflect.Method.invoke(Method.java:511)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at dalvik.system.NativeStart.main(Native Method)
04-25 04:26:53.659: E/AndroidRuntime(3823): Caused by: java.lang.IllegalArgumentException: column 'number' does not exist
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.database.AbstractCursor.getColumnIndexOrThrow(AbstractCursor.java:303)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.database.CursorWrapper.getColumnIndexOrThrow(CursorWrapper.java:78)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.widget.SimpleCursorAdapter.findColumns(SimpleCursorAdapter.java:333)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.widget.SimpleCursorAdapter.<init>(SimpleCursorAdapter.java:81)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at com.example.liyanxing.MainActivity.onCreate(MainActivity.java:40)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.app.Activity.performCreate(Activity.java:5104)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
04-25 04:26:53.659: E/AndroidRuntime(3823):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
04-25 04:26:53.659: E/AndroidRuntime(3823):  ... 11 more

Answer 3

LZ如果有root的话，可以将联系人的数据库导出来  查看下数据结构字段  从日志上分析只能说明获取的'number' 字段不存在