android ShareActionProvider分享功能

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一．ShareActionProvider用介绍

ShareActionProvider类的关系图

ShareActionProvider

extends ActionProvider

java.lang.Object
	android.support.v4.view.ActionProvider
		android.support.v7.widget.ShareActionProvider

二．简单用法

１．xml定义，menu_item.xml,注意引入合适的支持ShareActionProvider的包（v4,v7）

<?xml version="1.0" encoding="utf-8"?>
<menu
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    >
    <item
        android:id="@+id/action_create_order"
        android:title="create_order_title"
        android:icon="@drawable/ic_add_white_24dp"
        android:orderInCategory="1"
        app:showAsAction="ifRoom"
        />
    <item android:id="@+id/action_share"
        android:title="share"
        android:orderInCategory="2"
        app:showAsAction="ifRoom"
        app:actionProviderClass="android.support.v7.widget.ShareActionProvider"
        />
</menu>

２．Activity中主要代码展示，注意方法onCreateOptionsMenu（）中shareActionProvider的获取及调用setShareIntent（）

import android.content.Intent;
import android.support.v4.view.MenuItemCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.ShareActionProvider;
import android.view.Menu;
import android.view.MenuItem;

public class ToolbarActivity extends AppCompatActivity {
    private ShareActionProvider shareActionProvider;

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

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the app bar.
        getMenuInflater().inflate(R.menu.menu_item, menu);
        MenuItem menuItem = menu.findItem(R.id.action_share);
        shareActionProvider =
                (ShareActionProvider) MenuItemCompat.getActionProvider(menuItem);
        setShareActionIntent("Want to join me for share?");
        return super.onCreateOptionsMenu(menu);
    }

    private void setShareActionIntent(String text) {
        Intent intent = new Intent(Intent.ACTION_SEND);
        intent.setType("text/plain");
        intent.putExtra(Intent.EXTRA_TEXT, text);
        shareActionProvider.setShareIntent(intent);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.action_create_order:
                Intent intent = new Intent(this, OrderActivity.class);
                startActivity(intent);
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }
}

 3.运行效果图