小编ste*_*206的帖子

我使用此代码从相机获取图片并将其放在imageview上:

  private void openCamera()
{
    mMediaUri =getOutputMediaFileUri(MEDIA_TYPE_IMAGE);

    Intent photoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    photoIntent.putExtra(MediaStore.EXTRA_OUTPUT, mMediaUri);
    startActivityForResult(photoIntent, REQUEST_TAKE_PHOTO);
   // dialog.dismiss();


}


private Uri getOutputMediaFileUri(int mediaTypeImage)
{
    //check for external storage
    if(isExternalStorageAvaiable())
    {
        File mediaStorageDir = getActivity().getExternalFilesDir(Environment.DIRECTORY_PICTURES);

        String fileName = "";
        String fileType = "";
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new java.util.Date());

        fileName = "IMG_"+timeStamp;
        fileType = ".jpg";

        File mediaFile;
        try
        {
            mediaFile = File.createTempFile(fileName,fileType,mediaStorageDir);
            Log.i("st","File: "+Uri.fromFile(mediaFile));
        }
        catch (IOException e)
        {
            e.printStackTrace();
            Log.i("St","Error creating file: " + mediaStorageDir.getAbsolutePath() +fileName +fileType);
            return null;
        } …

我已经放了一些EditText,RecyclerView因为我需要得到一些价值.实施是这样的:

<android.support.v7.widget.RecyclerView
    android:layout_below="@id/firstrow"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:focusableInTouchMode="true"
    android:descendantFocusability="beforeDescendants"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:id="@+id/rectable"
    android:layout_marginLeft="@dimen/table_margin"
    android:layout_marginRight="@dimen/table_margin"
    android:layout_marginBottom="300dp" />

这是自定义xml与一些editText:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:background="@color/white"
android:orientation="horizontal"
android:layout_width="match_parent"
android:gravity="center"
android:layout_height="60dp ">


<TextView
    android:text="TextView"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:id="@+id/description"
    android:layout_weight="1"
    android:textColor="@color/black" />

<View
    style="@style/VerticalSeparator" />


<EditText
    android:hint="lol"
    android:id="@+id/weight"
    android:focusable="true"
    style="@style/DefaultEditCellStyle" />

<View
    style="@style/VerticalSeparator" />

<EditText
    android:hint="lol"
    android:id="@+id/arm"
    android:focusable="true"
    style="@style/DefaultEditCellStyle" />

<View
    style="@style/VerticalSeparator" />


<EditText
    android:hint="lol"
    android:focusable="true"
    android:id="@+id/moment"
    style="@style/DefaultEditCellStyle" />

实际上,当我点击EditText它打开键盘,失去焦点并立即关闭键盘,所以不可能写入这些.我也试过读其他问题,把这个:

recyclerView.setFocusable(true);
        recyclerView.setDescendantFocusability(ViewGroup.FOCUS_BEFORE_DESCENDANTS);
        recyclerView.setAdapter(adapter);

但是,在不同的情况下listview,它不起作用.

我怎么能解决这个问题？谢谢

我正在使用Dagger开始我的项目.我制作了这个模块:

@Module
public class FirebaseModule {

@Provides @Singleton
public FirebaseUser provideCurrentUser(){
    return FirebaseAuth.getInstance().getCurrentUser();
}

@Provides @Singleton
public DatabaseReference provideDatabaseReference(){
    return FirebaseDatabase.getInstance().getReference();
}

@Provides @Singleton
public FirebaseAuth provideFirebaseAuth(){
    return FirebaseAuth.getInstance();
}
}

还有这个:

@Module
public class AppModule
{
private HappyParkApp app;

public AppModule(HappyParkApp app) {
    this.app = app;
}

@Provides
public HappyParkApp providesApp()
{
return this.app;
}

@Provides
public Context getAppContext(){
    return this.app;
}
}

我也做了这个组件:

@Singleton
@Component(modules = {AppModule.class,
                      FirebaseModule.class})
public interface AppComponent {

    void inject(MainActivity activity);
}

这是应用程序中实现的appComponent:

public …

我需要这样做:使用CardView的RecycleView.第一张卡是静态的:它显示"此订单的详细信息".第一个之后的其他卡是动态的.所以我决定做这个代码:

public class DocumentTypeAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>
{



private List<DocumentType> document; //lista di card da riempire
private Context context;


public DocumentTypeAdapter(List<DocumentType>document, Context context)
{
    this.document = document;
    this.context = context;
}


public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
{

    View view;

    if(viewType == 0)
    {
        view = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_info, parent, false);
        ViewSimple simpleView = new ViewSimple(view);
        return simpleView;
    }
    else
    {
        view = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_info, parent, false);
        DocumentTypeViewHolder documentTypeViewHolder = new DocumentTypeViewHolder(view);
        return documentTypeViewHolder;
    }

}

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position)
{ …

我正在使用RealmRecyclerViewAdapter.我的问题是实现一个Filterable不起作用.这是代码:

 private class AirportAdapter extends RealmRecyclerViewAdapter<AirportR,RecyclerView.ViewHolder> implements Filterable
{
    Context context;
    OrderedRealmCollection<AirportR>listAirports;

    public AirportAdapter(Context activity, OrderedRealmCollection<AirportR>airports)
    {
        super(activity,airports, true);
        this.context = activity;
        this.listAirports = airports;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
    {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.airport_show, parent,false);
        AirportClass holder = new AirportClass(view);
        return holder;

    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position)
    {
       AirportR airportR = listAirports.get(position);

        AirportClass mHolder = (AirportClass)holder;

        mHolder.country.setText(airportR.getIsoCountry());
        mHolder.name.setText(airportR.getName());
    }

    public Filter getFilter()
    {
       AirportFilter filter = new AirportFilter(this, listAirports);
        return filter; …

我使用React.js和Express.js作为Web服务器制作了我的webapp.React在package.json中与Express(现在)连接到Express:

  "proxy": "http://localhost:5000/"

在我的Express服务器中,我用它来处理会话:

const cookieSession = require('cookie-session');

还有这个:

app.use(cookieSession({
 name: 'parse-session',
 secret: "SECRET_SIGNING_KEY",
 maxAge: 15724800000
}));

因此,当我使用登录到我的API时它工作正常,这是检查currentUser是否存在的代码:

    return new Promise((resolve,reject)=>{

if(req.session.token){    

    console.log(req.session.token);
    request({

      uri:'http://myserver.herokuapp.com/parse/users/me',
      headers: {
        'X-Parse-Application-Id': 'my-app-id',
        'X-Parse-Session-Token': req.session.token
      },
      json:true    

    }).then((userData) => {

       if(userData){    

          resolve(userData);

       }

    }).catch((error) => {

        reject(error);
    });
  }

并且在React中调用它没有问题:

   fetch('/user',{credentials:'include'})
    .then((response)=>{
        return response.json();
    })
    .then((body)=>{
        if(body.user){
            this.setState({logIn:true});
        }

    }).catch((error)=>{
           console.log('My error:',error);

    });

问题是当我尝试注销时:我在React上执行此操作:

 axios.post('/logout').then((res)=>{
        console.log(res);

 }).catch((err)=>{
        console.log(err);
 });

这是在Express上注销:

app.post('/logout',(req,res)=>{


if(req.session){

   req.session.destroy((error)=>{
      if(error){
        console.log(error);
      }
   });
}
}); 

这给了我这个错误信息:

TypeError: req.session.destroy is not …

用于回收视图的 XML 文件：

  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"

  <android.support.v7.widget.RecyclerView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/recyclerAircraftAdd"
    android:background="#FFF" />


<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="SALVA AEREO"
    android:id="@+id/salvaereo"

    android:textColor="#fff"
    android:background="#29B6F6"
    android:layout_alignParentBottom="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true" />

这是我的 recyclerView 适配器：

public class AircraftAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>
{


    private static final int LOADING_IMAGE = 0;
    private static final int SELECT_PICTURE = 111;
    private static final int DETAIL_AIRCRAFT = 1;
    private static final int DESCRIPTION = 2;
    public static Bitmap bmp;
    private Context context;
    private String imm,mod,man,cat,cl,vel,auto,cons,pos,cost;

    private ArrayList<String> arrayList;

    public AircraftAdapter(Context …

我有两个列表科特林,同样大小的,foodObjects: MutableList<ParseObject>?和checked: MutableList<Boolean>?.我需要做一个for循环并从foodObjects每次元素checked为true 时获取objectId .所以在Java中就是这样:

  for(int i = 0; i< foodObjects.size(); i++) {
      //here
  }

但是在Kotlin,我不知道为什么,有一些问题.事实上,如果我这样做:

 for(i in  0..foodObjects!!.size)
 {
     if (checked?.get(i) == true) {
        objectsId?.add(foodObjects.get(i).objectId)
     }

 }

我有IndexOutOfBoundsException:我不知道为什么,它继续循环也在foodObjects.size.我也可以使用过滤器和地图来做到这一点:

(0..foodObjects!!.size)
                 .filter { checked?.get(it) == true }
                 .forEach { objectsId?.add(foodObjects.get(it).objectId) }

但我给出了同样的错误.如果出现以下情况,我需要停止使用它:

  for(i in  0..foodObjects!!.size)
  {
    if(i < foodObjects.size) {
       if (checked?.get(i) == true) {
                     objectsId?.add(foodObjects.get(i).objectId)
       }
    }
  }

让它工作.

每个人都可以告诉我为什么在Kotlin我需要这样做,在Java中它运作良好？

我用viewPager和TabLayout创建了我的布局:

public class HomeFragment extends Fragment
{


public static TabLayout tabLayout;
public static ViewPager viewPager;
public static int int_items = 3 ;

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View inflatedView = inflater.inflate(R.layout.fragment_home, container,false);


    viewPager = (ViewPager) inflatedView.findViewById(R.id.viewpager);
    int [] drawables = {R.drawable.home,R.drawable.street,R.drawable.map};

    Bundle bundle = new Bundle();

    final SearchFragment searchFragment = new SearchFragment();
    final CardFragment cardFragment = new CardFragment();
    final MapFragment mapFragment = new MapFragment();

    viewPager.setAdapter(new FragmentPagerAdapter(getChildFragmentManager())
    {
        public Fragment getItem(int position)
        {
            if(position == 0)
             return …

在我的应用程序中，我需要从相机加载图像。

这是我使用的代码：

private void openCamera()
{
    mMediaUri =getOutputMediaFileUri(MEDIA_TYPE_IMAGE);

    Intent photoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    photoIntent.putExtra(MediaStore.EXTRA_OUTPUT, mMediaUri);
    startActivityForResult(photoIntent, REQUEST_TAKE_PHOTO);


}


private Uri getOutputMediaFileUri(int mediaTypeImage)
{
    //check for external storage
    if(isExternalStorageAvaiable())
    {
        File mediaStorageDir = getActivity().getExternalFilesDir(Environment.DIRECTORY_PICTURES);

        String fileName = "";
        String fileType = "";
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new java.util.Date());

        fileName = "IMG_"+timeStamp;
        fileType = ".jpg";

        File mediaFile;
        try
        {
            mediaFile = File.createTempFile(fileName,fileType,mediaStorageDir);
            Log.i("st","File: "+Uri.fromFile(mediaFile));
        }
        catch (IOException e)
        {
            e.printStackTrace();
            Log.i("St","Error creating file: " + mediaStorageDir.getAbsolutePath() +fileName +fileType);
            return null;
        }
        return …