Question

我正在尝试向我的webview应用添加共享功能，但无法使其正常工作。我能够显示图标，并且没有任何错误，但仍然无法点击共享按钮。我正在寻找2天但没有任何工作，而没有实现共享功能的不同教程。虽然这个没有显示错误，但是这不起作用。

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

为了使ShareActionProvider正常运行，您必须为其提供共享意图。此分享意图应与发送Simple Data to Other Apps课程中描述的相同，操作ACTION_SEND以及通过EXTRA_TEXT和EXTRA_STREAM等附加内容设置的其他数据。

@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);
        }
    }

Android Webview App中无法单击“共享”按钮

1 个答案: