Question

我在尝试阅读用户的联系人时遇到了崩溃，我想是因为它是因为模拟器，但我想要三重检查，因为我没有基于Android的手机。 Logcat给出了一个错误，它无法读取行“id”我错误地命名了该字符串吗？

最后，我如何实施一个对话框，看看用户是否希望该应用阅读联系人？

非常感谢:) 代码：

private void checkandImportContacts() {
    // TODO Auto-generated method stub
    SharedPreferences sp = getSharedPreferences(PREFS_CHECK, 0);
     String checkfirstime = sp.getString("key3", null);
     if(checkfirstime !=null && equals("sdhdasudafdsugdiasgdas38ey98d1diass")) {
         finish();
     } else {
         Cursor cursor = getContacts();
           while (cursor.moveToNext()) {
               String displayName = cursor.getString(cursor.getColumnIndex(ContactsContract.Data.DISPLAY_NAME));
              Toast.makeText(getApplicationContext(), displayName, Toast.LENGTH_LONG).show();
       }
}
     }




private Cursor getContacts() {
    Uri uri = ContactsContract.Contacts.CONTENT_URI;
    String[] projection = new String[] { ContactsContract.Contacts._ID, ContactsContract.Contacts.DISPLAY_NAME };
    String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = ‘" + ("1") + "’";
    String[] selectionArgs = null;
    String sortOrder = ContactsContract.Contacts.DISPLAY_NAME+ " COLLATE LOCALIZED ASC";
    return managedQuery(uri, projection, selection, selectionArgs, sortOrder);
}

logcat的：

04-23 16:49:48.288: E/AndroidRuntime(437): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.gta5news.bananaphone/com.gta5news.bananaphone.ChatService}: android.database.sqlite.SQLiteException: no such column: ‘1’: , while compiling: SELECT _id, display_name FROM view_contacts_restricted WHERE (in_visible_group = ‘1’) ORDER BY display_name COLLATE LOCALIZED ASC
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.os.Handler.dispatchMessage(Handler.java:99)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.os.Looper.loop(Looper.java:123)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.app.ActivityThread.main(ActivityThread.java:4627)
04-23 16:49:48.288: E/AndroidRuntime(437):  at java.lang.reflect.Method.invokeNative(Native Method)
04-23 16:49:48.288: E/AndroidRuntime(437):  at java.lang.reflect.Method.invoke(Method.java:521)
04-23 16:49:48.288: E/AndroidRuntime(437):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-23 16:49:48.288: E/AndroidRuntime(437):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-23 16:49:48.288: E/AndroidRuntime(437):  at dalvik.system.NativeStart.main(Native Method)
04-23 16:49:48.288: E/AndroidRuntime(437): Caused by: android.database.sqlite.SQLiteException: no such column: ‘1’: , while compiling: SELECT _id, display_name FROM view_contacts_restricted WHERE (in_visible_group = ‘1’) ORDER BY display_name COLLATE LOCALIZED ASC
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:158)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:114)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.content.ContentProviderProxy.bulkQueryInternal(ContentProviderNative.java:330)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.content.ContentProviderProxy.query(ContentProviderNative.java:366)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.content.ContentResolver.query(ContentResolver.java:245)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.app.Activity.managedQuery(Activity.java:1520)
04-23 16:49:48.288: E/AndroidRuntime(437):  at com.gta5news.bananaphone.ChatService.getContacts(ChatService.java:73)
04-23 16:49:48.288: E/AndroidRuntime(437):  at com.gta5news.bananaphone.ChatService.checkandImportContacts(ChatService.java:56)
04-23 16:49:48.288: E/AndroidRuntime(437):  at com.gta5news.bananaphone.ChatService.onCreate(ChatService.java:46)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-23 16:49:48.288: E/AndroidRuntime(437):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)

Answer 1

您在查询中使用了错误的字符

Caused by: android.database.sqlite.SQLiteException: no such column: ‘1’

SQLite尝试将‘1’解释为列名，因为它不是原始值。 SQLite中的值由'包围，列名由"包围，或者没有。

如果那组事物是动态的，那就这样：

int group = 1;
String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = ?";
String[] selectionArgs = new String[] { String.valueOf(group) };

该值自动包含在'＆amp;然后逃脱了。如果值是静态的，您只需执行

String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = 1";
String[] selectionArgs = null;

Answer 2

private void getDetails(){
        Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
        ContentResolver cr = getContentResolver();
        Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,null, null, null, null);
        String[] projection    = new String[] {ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
                        ContactsContract.CommonDataKinds.Phone.NUMBER };
        Cursor names = getContentResolver().query(uri, projection, null, null, null);

        int indexName = names.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME);
        int indexNumber = names.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
        names.moveToFirst();
        do {

            String name   = names.getString(indexName);
            Log.e("Name new:", name);
            String number = names.getString(indexNumber);
            Log.e("Number new:","::"+number);

        } while (names.moveToNext());
    }

以上内容会从您的联系人数据库中返回所有姓名和号码。

应用程序在阅读联系人时崩溃

2 个答案: