希望不是一个愚蠢的问题，但我的应用程序工作到两天前，但之后我得到了OTA更新，将其升级到Marshmallow。然后，不仅我不能得到我的联系人列表，甚至默认设备应用程序显示联系人列表不显示任何联系人。我从Play商店下载了几个Contact Management应用程序，甚至没有显示任何内容。我甚至不能发送/接收短信:)我想知道wtf正在发生。
好的，让我剪掉b.s并分享我的所作所为。 我根据Marshmallow需要的新动态权限请求更改了代码。我启动应用程序并授予对联系人的访问权限但不显示任何内容：（
这是我的代码，抱歉，我知道很长但很简单：
public class MainActivity extends AppCompatActivity
{
private static final String TAG = MainActivity.class.getSimpleName();
private static final int MY_PERMISSIONS_REQUEST_READ_CONTACTS = 10;
private SwipeRefreshLayout mRefreshLayout;
private RecyclerView mRecyclerView;
private ContactsAdapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
Log.d(TAG, "********************************");
Log.d(TAG, "*** Contacts Remover Started ***");
Log.d(TAG, "********************************");
setContentView(R.layout.activity_main);
mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
mRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.refreshScreen);
mRefreshLayout.setOnRefreshListener(this::refreshLayout);
mRefreshLayout.setColorSchemeResources(android.R.color.holo_blue_bright,
android.R.color.holo_green_light,
android.R.color.holo_orange_light,
android.R.color.holo_red_light);
// use this setting to improve performance if you know that changes
// in content do not change the layout size of the RecyclerView
mRecyclerView.setHasFixedSize(true);
// use a linear layout manager
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
// create adapter
mAdapter = new ContactsAdapter();
mRecyclerView.setAdapter(mAdapter);
// Check required permissions
checkContactPermission();
}
private void checkContactPermission()
{
Log.d(TAG, "Yu");
if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED ||
ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_CONTACTS) != PackageManager.PERMISSION_GRANTED)
{
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_CONTACTS))
{
// Show an explanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
}
else
{
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_CONTACTS,
Manifest.permission.WRITE_CONTACTS}, MY_PERMISSIONS_REQUEST_READ_CONTACTS);
}
}
else
{
Log.d(TAG, "Perms granted");
// Get Contacts and display it
refreshLayout();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults)
{
switch (requestCode)
{
case MY_PERMISSIONS_REQUEST_READ_CONTACTS:
{
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)
{
// Get Contacts and display it
refreshLayout();
}
else
{
this.finish();
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
private List<Contact> getContactList()
{
Log.d(TAG, "2");
List<Contact> contactList = new ArrayList<>(100);
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
Log.d(TAG, "3");
if (cur != null && cur.getCount() > 0)
{
int i = 0;
Log.d(TAG, "4");
while (cur.moveToNext())
{
i++;
Log.d(TAG, "-> " + i);
Contact contact = new Contact();
contact.setId(cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID)));
contact.setName(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)));
contact.setImageAddress(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.PHOTO_THUMBNAIL_URI)));
contactList.add(contact);
}
cur.close();
Log.d(TAG, "5");
}
Log.d(TAG, String.format("Number of %s contacts found", contactList.size()));
return contactList;
}
private Observable<Contact> getApps()
{
Log.d(TAG, "1");
return Observable.create(subscriber -> {
List<Contact> contactList = getContactList();
Log.d(TAG, "6");
if (subscriber.isUnsubscribed())
{
return;
}
Log.d(TAG, "7");
for (Contact contact : contactList)
{
subscriber.onNext(contact);
}
Log.d(TAG, "8");
if (!subscriber.isUnsubscribed())
{
subscriber.onCompleted();
}
Log.d(TAG, "9");
});
}
private void refreshLayout()
{
Log.d(TAG, "0");
if (mRefreshLayout.isRefreshing())
{
return;
}
mRefreshLayout.setRefreshing(true);
getApps().toSortedList()
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Observer<List<Contact>>()
{
@Override
public void onCompleted()
{
Log.d(TAG, "10");
Toast.makeText(MainActivity.this, "List updated!", Toast.LENGTH_LONG).show();
mRefreshLayout.setRefreshing(false);
}
@Override
public void onError(Throwable e)
{
Log.d(TAG, "ERROR!!!");
Toast.makeText(MainActivity.this, "Shit! Something went wrong :(", Toast.LENGTH_LONG).show();
mRefreshLayout.setRefreshing(false);
}
@Override
public void onNext(List<Contact> contactList)
{
Log.d(TAG, "*");
mAdapter.setContactList(contactList);
mAdapter.notifyDataSetChanged();
}
});
}
}
最后我的日志是：
10-15 01:05:46.239 1514-1514/? D/MainActivity: ********************************
10-15 01:05:46.239 1514-1514/? D/MainActivity: *** Contacts Remover Started ***
10-15 01:05:46.239 1514-1514/? D/MainActivity: ********************************
10-15 01:05:46.285 1514-1514/? D/MainActivity: Yu
10-15 01:05:46.287 1514-1514/? D/MainActivity: Perms granted
10-15 01:05:46.287 1514-1514/? D/MainActivity: 0
10-15 01:05:46.288 1514-1514/? D/MainActivity: 1
10-15 01:05:46.306 1514-14799/? D/MainActivity: 2
这一行发生了一些事情Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);。没有错误，没有崩溃，没有报告！什么都不是：（
答案 0 :(得分：0)
当手机上的默认通讯录应用也没有显示联系人时，您似乎在浪费时间调整代码。
看起来OTA更新已经进行了某种部分工厂重置，或者可能只是删除了以前提供设备联系人的帐户。首先对其进行排序，因此默认应用会显示一些联系人，我怀疑您的应用也会开始显示联系人。