Question

我在代码中实现此功能时遇到了问题我想要一些东西，当我点击该项目时，我会获得该网址并在Activity中打开一个新的WebView，谢谢。

Beaches.java

package com.novela.minha.novela;

public class Beaches {

public String name;

public String getName() {
    return name;
}

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

public String getUrl() {
    return url;
}

public void setUrl(String url) {
    this.url = url;
}

public Beaches() {
}

public String url;
}

MyAdapter.java

package com.novela.minha.novela;
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
public class MyAdapter extends RecyclerView.Adapter<MyHolder> {

Context c;
ArrayList<Beaches> beaches;

public MyAdapter(Context c, ArrayList<Beaches> beaches){
    this.c= c;
    this.beaches=beaches;
}
@Override
public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v= LayoutInflater.from(parent.getContext()).inflate(R.layout.card,parent,false);
    MyHolder holder= new MyHolder(v);

    return holder;
}

@Override
public void onBindViewHolder(MyHolder holder, int position) {
    holder.nameTxt.setText(beaches.get(position).getName());
    PicassoClient.downloadimg(c, beaches.get(position).getUrl(),holder.img);


}

@Override
public int getItemCount() {
    return beaches.size();
}
}

NoticiasFragment.java

package com.novela.minha.novela;
import android.app.Dialog;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import com.firebase.client.Firebase;
import java.util.ArrayList;
import java.util.List;

public class NoticiasFragment extends Fragment {
final static String DB_URL = "https:/myendrendnd.firebaseio.com/";
EditText nameeditText, urleditText;
Button btnsave;
RecyclerView recyclerView;
FirebaseClient firebaseClient;

public NoticiasFragment() {
    // Required empty public constructor
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_noticias, container, false);


    Toolbar toolbar = (Toolbar) view.findViewById(R.id.toolbar);
    //setSupportActionBar(toolbar);


    recyclerView =  view.findViewById(R.id.RecyclerNoticias);
    recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
    firebaseClient = new FirebaseClient(getActivity(), DB_URL, recyclerView);
    firebaseClient.refreshdata();


    return recyclerView;
}


    private void displayDialog()
{
    Dialog d= new Dialog(getActivity());
    d.setTitle("SaveData");
    d.setContentView(R.layout.customdialog_layout);
    nameeditText= (EditText)d.findViewById(R.id.nameEditText);
    urleditText=(EditText)d.findViewById(R.id.urlEditText);
    btnsave= (Button)d.findViewById(R.id.saveBtn);
    btnsave.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            firebaseClient.savedata(nameeditText.getText().toString(),urleditText.getText().toString());

            nameeditText.setText("");
            urleditText.setText("");
        }
    });

    d.show();

}


}

FirebaseCliete.java

package com.example.admin.firebaserecyclerviewexample;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.widget.Toast;
import com.firebase.client.ChildEventListener;
import com.firebase.client.DataSnapshot;
import com.firebase.client.Firebase;
import com.firebase.client.FirebaseError;
import com.novela.minha.novela.Beaches;
import com.novela.minha.novela.MyAdapter;
import java.util.ArrayList;

public class FirebaseClient {

Context c;
String DB_URL;
RecyclerView recyclerView;

Firebase firebase;
ArrayList<Beaches> beaches= new ArrayList<>();
MyAdapter adapter;


public  FirebaseClient(Context c, String DB_URL, RecyclerView recyclerView)
{
    this.c= c;
    this.DB_URL= DB_URL;
    this.recyclerView= recyclerView;


    Firebase.setAndroidContext(c);
    firebase=new Firebase(DB_URL);
}

public  void savedata (String name, String texto, String url)
{
    Beaches b= new Beaches();
    b.setName(name);
    b.setUrl(url);
    b.setTexto(texto);

    firebase.child("Beaches").push().setValue(b);


}

public  void refreshdata()
{
    firebase.addChildEventListener(new ChildEventListener() {
        @Override
        public void onChildAdded(DataSnapshot dataSnapshot, String s) {
            getupdates(dataSnapshot);
        }

        @Override
        public void onChildChanged(DataSnapshot dataSnapshot, String s) {
            getupdates(dataSnapshot);
        }

        @Override
        public void onChildRemoved(DataSnapshot dataSnapshot) {

        }

        @Override
        public void onChildMoved(DataSnapshot dataSnapshot, String s) {

        }

        @Override
        public void onCancelled(FirebaseError firebaseError) {

        }
        });
        }

        public void getupdates(DataSnapshot dataSnapshot){
        beaches.clear();
        for(DataSnapshot ds :dataSnapshot.getChildren()){
        Beaches b= new Beaches();
        b.setName(ds.getValue(Beaches.class).getName());
        b.setTexto(ds.getValue(Beaches.class).getTexto());
        b.setUrl(ds.getValue(Beaches.class).getUrl());
        beaches.add(b);

        }
    if(beaches.size()>0)
    {
        adapter=new MyAdapter(c, beaches);
        recyclerView.setAdapter(adapter);
    }else
    {
        Toast.makeText(c, "No data", Toast.LENGTH_SHORT).show();
    }
    }
    }

MainActivity.java

package com.novela.minha.novela;

import android.support.design.widget.TabLayout;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.app.Dialog;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

EditText nameeditText,urleditText,textoeditText;
Button btnsave;
com.example.admin.firebaserecyclerviewexample.FirebaseClient firebaseClient;

/**
 * The {@link android.support.v4.view.PagerAdapter} that will provide
 * fragments for each of the sections. We use a
 * {@link FragmentPagerAdapter} derivative, which will keep every
 * loaded fragment in memory. If this becomes too memory intensive, it
 * may be best to switch to a
 * {@link android.support.v4.app.FragmentStatePagerAdapter}.
 */
private SectionsPagerAdapter mSectionsPagerAdapter;

/**
 * The {@link ViewPager} that will host the section contents.
 */
private ViewPager mViewPager;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    FloatingActionButton fab = findViewById(R.id.fab);

    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            displayDialog();


        }
    });

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    // Create the adapter that will return a fragment for each of the three
    // primary sections of the activity.
    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.container);
    mViewPager.setAdapter(mSectionsPagerAdapter);

    TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);

    mViewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
    tabLayout.addOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(mViewPager));


    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });

}





@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

private void displayDialog()
{
    Dialog d= new Dialog(this);
    d.setTitle("SaveData");
    d.setContentView(R.layout.customdialog_layout);
    nameeditText= (EditText)d.findViewById(R.id.nameEditText);
    textoeditText= (EditText) d.findViewById(R.id.textoEditText);
    urleditText=(EditText)d.findViewById(R.id.urlEditText);
    btnsave= (Button)d.findViewById(R.id.saveBtn);
    btnsave.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            firebaseClient.savedata(nameeditText.getText().toString(),textoeditText.getText().toString(),urleditText.getText().toString());

            nameeditText.setText("");
            textoeditText.setText("");
            urleditText.setText("");
        }
    });

    d.show();

}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}


public class SectionsPagerAdapter extends FragmentPagerAdapter {

    public SectionsPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int position) {

        switch (position) {

            case 0:
                NoticiasFragment tab1 = new NoticiasFragment();
                return tab1;

            case 1:
                ResumoFragment tab2 = new ResumoFragment();
                return tab2;

            case 2:
                MaisFragment tab3 = new MaisFragment();
                return tab3;
                default:
                    return null;

        }


    }

    @Override
    public int getCount() {
        // Show 3 total pages.
        return 3;
    }

   @Override

    public CharSequence getPageTitle (int position) {

       switch (position) {

           case 0:
               return "NOTICIAS";

           case 1:
               return "RESUMO";
           case 3:
             return   "MAIS";
       }

               return null;



   }
   }
   }

MyHolder.Java

package com.novela.minha.novela;

import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

public class MyHolder extends RecyclerView.ViewHolder {

TextView nameTxt, textoTxt;
ImageView img;
public MyHolder(View itemView) {
    super(itemView);

    nameTxt= (TextView) itemView.findViewById(R.id.nameTxt);
    img=(ImageView) itemView.findViewById(R.id.imageView3);
    textoTxt = (TextView) itemView.findViewById(R.id.textoTxt);

}
}

PicassoClient.java

package com.novela.minha.novela;
import android.content.Context;
import android.widget.ImageView;
import com.squareup.picasso.Picasso;

public class PicassoClient {

public  static  void downloadimg(Context c, String url, ImageView img)
{
    if (url!=null && url.length()>0)
    {
        Picasso.with(c).load(url).placeholder(R.drawable.placeholder).into(img);

    }else
    {
        Picasso.with(c).load(R.drawable.placeholder).into(img);
    }
    }
    }

我想播放在webview中密封的项目的网址

NewsWebView.java

package com.example.minhanovela;

import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;

public class NewsWebView extends AppCompatActivity {

WebView myWebView;
private ProgressBar progressBar;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_news_web_view);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    progressBar = (ProgressBar)findViewById(R.id.pro);

    myWebView = (WebView) findViewById(R.id.webView);
    WebSettings webSettings = myWebView.getSettings();
    webSettings.setJavaScriptEnabled(true);
    Bundle b = getIntent().getExtras();
    String id = b.getString("id");
    myWebView.loadUrl(id);
    myWebView.setWebViewClient(new WebViewClient());
    myWebView.setWebViewClient(new WebViewClient(){
        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            super.onPageStarted(view, url, favicon);
            progressBar.setVisibility(View.VISIBLE);
            setTitle("Loading...");
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);
            progressBar.setVisibility(View.GONE);
            setTitle(view.getTitle());
        }
    });
           }

            }

Answer 1

这是一个基本的例子

static class ViewHolder extends RecyclerView.ViewHolder {

        private TextView name;
        private ImageView image;

        public ViewHolder(View itemView) {
            super(itemView);
            name = (TextView) itemView.findViewById(R.id.name);
            image = (ImageView) itemView.findViewById(R.id.image);
        }

        public void bind(final ContentItem item, final OnItemClickListener listener) {
            name.setText(item.name);
            Picasso.with(itemView.getContext()).load(item.imageUrl).into(image);
            itemView.setOnClickListener(new View.OnClickListener() {
                @Override public void onClick(View v) {
                    //Here's where you get the url from the item like so
                    Log.d("URL", "The url from the item is: " + item.getUrl)
                }
            });
        }
    }`

你可以看到我如何在那里集成Picasso和点击监听器，我使用Log类输出url，你可以使用intent将url发送到其他活动

单击RecyclerView中的项目并返回所选项目的URL

1 个答案: