联系人选择器未在 Android Studio 中提供预期结果

Question

我有一段相当简单的代码可以从选择器中检索联系信息，但它没有给我预期的结果。 我得到了联系人的姓名，但没有得到号码。由于某种原因，游标返回 -1 的索引（应用程序崩溃的原因）。我可以确保联系人已填写了号码字段。我无法确定此错误的原因。

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)

        if (requestCode == PICKCONTACT) {
            if (resultCode == Activity.RESULT_OK) {
                val contactData = data?.data?:throw error("error")
                val cursor = contentResolver.query(contactData, null, null, null, null)
                cursor?.moveToFirst()?:throw error("Data not found")
                val phNoIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER )
                val nameIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)
                Log.i("phoneNo", "$nameIndex $phNoIndex")
//                recipient.put(cursor.getString(nameIndex), cursor.getString(phNoIndex) as Int)
                phone=cursor.getString(phNoIndex)
                name=cursor.getString(nameIndex)

                cursor.close()
                Log.i("info", phone+name)

                Log.i("phone", name)
            }
        }
    }

编辑：我正在添加意图选择器请求 -

public fun pickContact(view: View){
        val intent=Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI)
        startActivityForResult(intent, PICKCONTACT )
    }

错误如下：

Process: com.example.smssender, PID: 29366
    java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { dat=content://com.android.contacts/contacts/lookup/745i7546045a8e2cb2bf.3789r1632-29294B4F39.847r1845-29294B4F39/1851 flg=0x1 (has extras) }} to activity {com.example.smssender/com.example.smssender.MainActivity}: java.lang.IllegalStateException: Couldn't read row 0, col -1 from CursorWindow.  Make sure the Cursor is initialized correctly before accessing data from it.
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4610)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4652)
        at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:49)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1948)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7050)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:965)
     Caused by: java.lang.IllegalStateException: Couldn't read row 0, col -1 from CursorWindow.  Make sure the Cursor is initialized correctly before accessing data from it.
        at android.database.CursorWindow.nativeGetString(Native Method)
        at android.database.CursorWindow.getString(CursorWindow.java:465)
        at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:51)
        at android.database.CursorWrapper.getString(CursorWrapper.java:137)
        at com.example.smssender.MainActivity.onActivityResult(MainActivity.kt:54)
        at android.app.Activity.dispatchActivityResult(Activity.java:7762)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4603)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4652) 
        at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:49) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1948) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loop(Looper.java:214) 
        at android.app.ActivityThread.main(ActivityThread.java:7050) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:965) 

Answer 1

如果您对联系人的电话号码感兴趣，您应该使用“电话选择器”而不是“联系人选择器”。

此选择器将要求用户选择一个联系人>，然后是该联系人的电话号码。

代码如下：

Intent intent = Intent(Intent.ACTION_PICK);
intent.setType(CommonDataKinds.Phone.CONTENT_TYPE); // Note the Phone type
startActivityForResult(intent, PICKCONTACT);

以下是从 onActivityResult 意图获取信息的方法：

Uri dataUri = data.getData();
String[] projection = new String[]{CommonDataKinds.Phone.NUMBER};
Cursor cursor = getContentResolver().query(dataUri, projection, null, null, null);