在Android Webview应用程序中无法点按共享按钮

Question

我正在尝试将共享功能添加到我的webview应用程序，但无法使其正常工作。我能够显示图标，并且没有任何错误，但分享按钮仍然无法点击。我正在寻找2天，但没有任何工作，而不是实现共享功能不同的教程。虽然这个显示没有错误，但是，这是行不通的。

我的Java文件

import android.content.Intent; 
import android.os.Bundle; 
import android.support.design.widget.FloatingActionButton; 
import android.support.design.widget.Snackbar; 
import android.support.v4.widget.SwipeRefreshLayout; 
import android.support.v7.app.AppCompatActivity; 
import android.support.v7.widget.ShareActionProvider; 
import android.support.v7.widget.Toolbar; 
import android.view.View; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.webkit.WebSettings; 
import android.webkit.WebView; 
import android.webkit.WebViewClient; 
import android.support.v4.view.MenuItemCompat; 
import android.support.v7.app.AppCompatActivity; 
import android.support.v7.widget.ShareActionProvider; 

public class MainActivity extends AppCompatActivity { 
    private WebView YoWeb; 
    private ShareActionProvider mShareActionProvider; 

    SwipeRefreshLayout swipe; 

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

     swipe = (SwipeRefreshLayout) findViewById(R.id.swipe); 
     swipe.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { 
      @Override 
      public void onRefresh() { 
       LoadWeb(); 
      } 
     }); 
     LoadWeb(); 
    } 

    public void LoadWeb() { 
     YoWeb = (WebView)findViewById(R.id.webview); 
     WebSettings webSettings = YoWeb.getSettings(); 
     webSettings.setJavaScriptEnabled(true); 
     YoWeb.loadUrl("website url"); 
     swipe.setRefreshing(true); 
     YoWeb.setWebViewClient(new WebViewClient() { 

      //onPageFinished Method 
      public void onPageFinished(WebView view, String url) { 
       //Hide the SwipeRefreshLayout 
       swipe.setRefreshing(false); 
      } 
     }); 
    } 

    @Override 
    public void onBackPressed() { 
     if (YoWeb.canGoBack()) { 
      YoWeb.goBack(); 
     } else { 
      super.onBackPressed(); 
     } 
    } 

    @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); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate menu resource file. 
     getMenuInflater().inflate(R.menu.menu_main, menu); 

     // Locate MenuItem with ShareActionProvider 
     MenuItem item = menu.findItem(R.id.menu_item_share); 

     // Fetch and store ShareActionProvider 
     mShareActionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(item); 

     // Return true to display menu 
     return true; 
    } 

    // Call to update the share intent 
    private void setShareIntent(Intent shareIntent) { 
     if (mShareActionProvider != null) { 
      mShareActionProvider.setShareIntent(shareIntent); 
     } 
    } 
} 

主菜单布局文件

<menu xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
xmlns:tools="http://schemas.android.com/tools" 
tools:context="com.yoalfaaz.yoalfaaz.MainActivity"> 

<item 
    android:id="@+id/menu_item_share" 
    android:showAsAction="ifRoom" 
    android:title="Share" 
    app:actionProviderClass="android.support.v7.widget.ShareActionProvider" 
    app:showAsAction="always" /> 
<item 
    android:id="@+id/action_settings" 
    android:orderInCategory="100" 
    android:title="@string/action_settings" 
    app:showAsAction="never" /> 

Answer 1

为了ShareActionProvider的功能，你必须提供一个份额的意图。此份额意图应与发送Simple Data to Other Apps课程中所述的相同，其中操作ACTION_SEND和额外数据通过额外设置，如EXTRA_TEXT和EXTRA_STREAM。

@Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     switch (item.getItemId()) { 
      case R.id.share: 

       Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND); 
       sharingIntent.setType("text/plain"); 
       String shareBodyText = "Check it out. Your message goes here"; 
       sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,"Subject here"); 
       sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, shareBodyText); 
       startActivity(Intent.createChooser(sharingIntent, "Sharing Option")); 
       return true; 

      default: 
       return super.onOptionsItemSelected(item); 
     } 
    }