1

我有一个带有 onclick 处理程序的按钮，定义如下：

    <Button
    android:id="@+id/ImportCalendar"
    style="?android:attr/buttonStyleSmall"
    android:layout_width="wrap_content"
    android:layout_height="34dp"
    android:onClick="icaltesting"
    android:paddingLeft="10dp"
    android:text="Import" />

现在我已经testing()在我的活动类中定义了该函数，我想使用该 getContentResolver()函数最终在我的 android 设备中创建一个本地日历。我使用的代码如下：

public void icaltesting(View view) {
    Uri calUri = CalendarContract.Calendars.CONTENT_URI;
    ContentValues cv = new ContentValues();
    cv.put(CalendarContract.Calendars.NAME, "Test");
    cv.put(CalendarContract.Calendars.CALENDAR_DISPLAY_NAME, "Local Calendar");
    cv.put(CalendarContract.Calendars.VISIBLE, 1);
    cv.put(CalendarContract.Calendars.SYNC_EVENTS, 1);

    calUri = calUri.buildUpon()
        .appendQueryParameter(CalendarContract.CALLER_IS_SYNCADAPTER, "true")
        .appendQueryParameter(CalendarContract.Calendars.ACCOUNT_NAME, "Test")
        .appendQueryParameter(CalendarContract.Calendars.ACCOUNT_TYPE,     CalendarContract.ACCOUNT_TYPE_LOCAL)
        .build();
    Uri result = getContentResolver().insert(calUri, cv);
  }

这是抛出 anIllegalStateException: Could not execute method of the activity并且应用程序强制关闭的最后一行。我想我没有getContentResolver()正确调用该函数。我该如何解决这个问题？

编辑 1 相关的堆栈跟踪是这样的：

   08-23 20:05:56.580: E/AndroidRuntime(24197): FATAL EXCEPTION: main
   08-23 20:05:56.580: E/AndroidRuntime(24197): java.lang.IllegalStateException: Could not execute method of the activity
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.view.View$1.onClick(View.java:3044)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.view.View.performClick(View.java:3511)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.view.View$PerformClick.run(View.java:14105)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.os.Handler.handleCallback(Handler.java:605)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.os.Handler.dispatchMessage(Handler.java:92)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.os.Looper.loop(Looper.java:137)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.app.ActivityThread.main(ActivityThread.java:4575)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at java.lang.reflect.Method.invokeNative(Native Method)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at java.lang.reflect.Method.invoke(Method.java:511)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at dalvik.system.NativeStart.main(Native Method)
   08-23 20:05:56.580: E/AndroidRuntime(24197): Caused by: java.lang.reflect.InvocationTargetException
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at java.lang.reflect.Method.invokeNative(Native Method)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at java.lang.reflect.Method.invoke(Method.java:511)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.view.View$1.onClick(View.java:3039)
   08-23 20:05:56.580: E/AndroidRuntime(24197): Caused by: java.lang.IllegalArgumentException: the name must not be empty: null
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:166)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:136)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.content.ContentProviderProxy.insert(ContentProviderNative.java:415)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at android.content.ContentResolver.insert(ContentResolver.java:735)
   08-23 20:05:56.580: E/AndroidRuntime(24197):     at com.example.myfirstapp.CalendarTest.icaltesting(CalendarTest.java:117)
4

1 回答 1

0

I guess if you look closely at the stack trace, you'll find another exception. This exception is the root cause.

But in fact this is not important. There is no correct way to call getContentResolver() from an onClick handler. You shouldn't use it on the UI thread at all. Schedule an AsyncTask instead.

UPDATE: according to the documentation, you are missing several required fields

Insert

When inserting a new calendar the following fields must be included:

ACCOUNT_NAME

ACCOUNT_TYPE

NAME

CALENDAR_DISPLAY_NAME

CALENDAR_COLOR

CALENDAR_ACCESS_LEVEL

OWNER_ACCOUNT

于 2013-08-23T14:28:53.430 回答