Datei in Webansicht nicht öffnen

Question

Ich öffne meine Website in Android App mit WebView und alles funktioniert, aber wenn ich klicke Dateien auswählen, um Bilder hochzuladen, dann ist diese Schaltfläche nicht anklickbar. In meiner Website gibt es eine Option zum Hochladen von Bildern für diesen Benutzer muss Bilder hochladen, aber wählen Sie die Schaltfläche nicht innerhalb der App geklickt wird.

package com.example.roomsarehere.roomsarehere; 

import android.app.ProgressDialog; 
import android.content.Intent; 
import android.graphics.Bitmap; 
import android.net.Uri; 
import android.os.Bundle; 
import android.support.design.widget.FloatingActionButton; 
import android.support.design.widget.Snackbar; 
import android.view.KeyEvent; 
import android.view.View; 
import android.support.design.widget.NavigationView; 
import android.support.v4.view.GravityCompat; 
import android.support.v4.widget.DrawerLayout; 
import android.support.v7.app.ActionBarDrawerToggle; 
import android.support.v7.app.AppCompatActivity; 
import android.support.v7.widget.Toolbar; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.webkit.WebSettings; 
import android.webkit.WebView; 
import android.webkit.WebViewClient; 

import java.net.URI; 

public class MainActivity extends AppCompatActivity 
    implements NavigationView.OnNavigationItemSelectedListener { 





//initializing WebView 
private WebView mwebView; 

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


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

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

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); 
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
      this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close); 
    drawer.setDrawerListener(toggle); 
    toggle.syncState(); 

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view); 
    navigationView.setNavigationItemSelectedListener(this); 

    //WebView 
    mwebView = (WebView) findViewById(R.id.myWebView); 
    WebSettings webSettings = mwebView.getSettings(); 
    webSettings.setJavaScriptEnabled(true); 
    //improve webView performance 
    mwebView.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH); 
    mwebView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK); 
    mwebView.getSettings().setAppCacheEnabled(true); 
    mwebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY); 
    webSettings.setDomStorageEnabled(true); 
    webSettings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS); 
    webSettings.setUseWideViewPort(true); 
    webSettings.setSavePassword(true); 
    webSettings.setSaveFormData(true); 
    webSettings.setEnableSmoothTransition(true); 


    mwebView.loadUrl("http://www.roomsarehere.com"); 
    //force links open in webview only 
    mwebView.setWebViewClient(new MyWebviewClient()); 

} 


@Override 
public void onBackPressed() { 
    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); 
    if (drawer.isDrawerOpen(GravityCompat.START)) { 
     drawer.closeDrawer(GravityCompat.START); 
    } else { 
     super.onBackPressed(); 
    } 
} 

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

@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); 
} 

@SuppressWarnings("StatementWithEmptyBody") 
@Override 
public boolean onNavigationItemSelected(MenuItem item) { 
    // Handle navigation view item clicks here. 
    int id = item.getItemId(); 

    if (id == R.id.nav_camera) { 
     // Handle the camera action 
     mwebView.loadUrl("http://www.newsweek.com/us"); 
    } else if (id == R.id.nav_gallery) { 
     mwebView.loadUrl("http://www.newsweek.com/world"); 
    } else if (id == R.id.nav_manage) { 
     mwebView.loadUrl("http://www.newsweek.com/tech-science"); 
    } else if (id == R.id.nav_slideshow) { 
     mwebView.loadUrl("http://www.newsweek.com/sports"); 
    } else if (id == R.id.nav_share) { 
     mwebView.loadUrl("http://www.newsweek.com/about-newsweek"); 
    } else if (id == R.id.nav_send) { 
     mwebView.loadUrl("http://www.newsweek.com/contact"); 
    } 

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); 
    drawer.closeDrawer(GravityCompat.START); 
    return true; 
} 

private class MyWebviewClient extends WebViewClient { 
    @Override 
    public boolean shouldOverrideUrlLoading(WebView view, String url) { 
     if (Uri.parse(url).getHost().equals("www.roomsarehere.com")) { 
      //open url contents in webview 
      return false; 
     } else { 
      //here open external links in external browser or app 
      Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 
      startActivity(intent); 
      return true; 
     } 

    } 
    //ProgressDialogue 
    ProgressDialog pd = null; 

    @Override 
    public void onPageStarted(WebView view, String url, Bitmap favicon) { 
     pd=new ProgressDialog(MainActivity.this); 
     pd.setTitle("Please Wait.."); 
     pd.setMessage("Content is Loading.."); 
     pd.show(); 
     super.onPageStarted(view, url, favicon); 
    } 

    @Override 
    public void onPageFinished(WebView view, String url) { 
     pd.dismiss(); 
     super.onPageFinished(view, url); 
    } 
} 
//goto previous page when pressing back button 

@Override 
public boolean onKeyDown(int keyCode, KeyEvent event) { 
    if (event.getAction() == KeyEvent.ACTION_DOWN) { 
     switch (keyCode) { 
      case KeyEvent.KEYCODE_BACK: 
       if (mwebView.canGoBack()) { 
        mwebView.goBack(); 
       } else { 
        finish(); 
       } 
       return true; 
     } 
    } 
    return super.onKeyDown(keyCode, event); 
} 
} 

Answer 1

Verwenden Sie diesen Code.

erklären diese Variable global

private ValueCallback<Uri[]> afterLolipop; 
private ValueCallback<Uri> mUploadMessage; 

Dann WebChromeClient listner ot Ihr WebView hinzu:

 webView.setWebChromeClient(new WebChromeClient() { 

     // For Android 3.0+ - undocumented method 
     public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) { 

       Intent i = new Intent(Intent.ACTION_GET_CONTENT); 
       i.addCategory(Intent.CATEGORY_OPENABLE); 
       i.setType("image/*"); 
       startActivityForResult(Intent.createChooser(i, "File Chooser"), 101); 
       Log.i("DEBUG", "Open file Chooser"); 
       mUploadMessage = uploadMsg; 
      } 

     // For Android > 4.1 - undocumented method 
     @SuppressWarnings("unused") 
     public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) { 
      openFileChooser(uploadMsg, ""); 

     } 

     // For Android > 5.0 
     @TargetApi(Build.VERSION_CODES.LOLLIPOP) 
     public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) { 

       startActivityForResult(fileChooserParams.createIntent(), 101); 


     } 

    }); 

In onActivityResult()

@Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) { 
     switch (requestCode) { 
      case 101: 
       if (resultCode == RESULT_OK) { 

        Uri result = intent == null || resultCode != RESULT_OK ? null 
          : intent.getData(); 
        if (mUploadMessage != null) { 
         mUploadMessage.onReceiveValue(result); 
        } else if (afterLolipop != null) { 

         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { 
          afterLolipop.onReceiveValue(WebChromeClient.FileChooserParams.parseResult(resultCode, intent)); 
          afterLolipop = null; 
         } 
        } 
        mUploadMessage = null; 
       } 
     } 

    } 

Hoffe, dass es funktionieren wird ..