尝试访问 android 应用程序中的联系人不断崩溃

Question

我正在尝试通过我的应用访问联系人。所以我可以通过邮件与朋友分享信息。到目前为止，联系人已显示，但是当我单击要添加到电子邮件的名称时，应用程序只是返回到上一个屏幕并且不会发送电子邮件。编辑文本未设置为我选择的联系人。

Android 清单

 <uses-permission android:name="android.permission.READ_CONTACTS"> </uses-permission>

电子邮件发送类

contacts.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            Intent contactPickerIntent = new Intent(Intent.ACTION_PICK,
                    Contacts.CONTENT_URI);
            startActivityForResult(contactPickerIntent, CONTACT_PICKER_RESULT);
        }
    });

....

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK) {
         System.out.println("yo");
        switch (requestCode) {
        case CONTACT_PICKER_RESULT:
            Cursor cursor = null;
            String email = "";
            System.out.println("Hello");
            try {
                Uri result = data.getData();
                Log.v("DEBUG: ", "Got a contact result: "
                        + result.toString());

                // get the contact id from the Uri
                String id = result.getLastPathSegment();

                // query for everything email
                cursor = getContentResolver().query(Email.CONTENT_URI,
                        null, Email.CONTACT_ID + "=?", new String[] { id },
                        null);

                int emailIdx = cursor.getColumnIndex(Email.DATA);

                // let's just get the first email
                if (cursor.moveToFirst()) {
                    email = cursor.getString(emailIdx);
                    Log.v("DEBUG: ", "Got email: " + email);
                } else {
                    Log.w("DEBUG: ", "No results");
                }
            } catch (Exception e) {
                Log.e("DEBUG: ", "Failed to get email data", e);
            } finally {
                if (cursor != null) {
                  cursor.close();
                }
               // EditText emailEntry = (EditText) findViewById(R.id.invite_email);
                personsEmail.setText(email);
                if (email.length() == 0) {
                    Toast.makeText(this, "No email found for contact.",
                            Toast.LENGTH_LONG).show();
                }

            }

            break;
        }

    } else {
        Log.w("DEBUG: ", "Warning: activity result not ok");
    }
}

更令人费解的是，logcat 上竟然什么都没有出现！所以它超越了我所有的错误检查。知道为什么屏幕崩溃并且电子邮件地址未添加到 EditText 中吗？

Answer 1

如果您在最新的操作系统（即 Android M）中对其进行测试，他们已经引入了一组新的权限，称为运行时权限。

http://developer.android.com/training/permissions/requesting.html

查看此链接，如果这能解决问题，请告诉我们。

Answer 2

Try this

public void getNumber(ContentResolver cr) {
        Cursor phones = cr.query(
                ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null,
                null, null);
        while (phones.moveToNext()) {
            ContactSynRequestcontacts data = new ContactSynRequestcontacts();

String contactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));

光标电子邮件 = contResv.query(Email.CONTENT_URI,null,Email.CONTACT_ID + " = " + contactId , null, null); 而（电子邮件。moveToNext（）） { 字符串电子邮件 = emails.getString(emails.getColumnIndex(Email.DATA)); 休息; } emails.close();

            data.setName(name);
            data.setPhoneNumber(phoneNumber);
            userContactList.add(data);
        }
        phones.close();// close cursor
    }

    public class ContactSynRequestcontacts  {
    private String Name;

    public String getName() {
        return Name;
    }

    public void setName(String name) {
        this.Name = name;
    }
    private String PhoneNumber;

    public String getPhoneNumber() {
        return PhoneNumber;
    }

    public void setPhoneNumber(String mobile) {
        this.PhoneNumber = mobile;
    }
}