“共享”按钮显示为灰色并已禁用

我有以下代码来打开共享Intent但它已禁用且无法单击。

@Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.share, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: onBackPressed(); break; case R.id.action_share: Intent share = new Intent(Intent.ACTION_SEND); share.setType("image/png"); File folder = new File(Environment.getExternalStorageDirectory() + "/TESTFOLDER"); if (!folder.exists()) { folder.mkdir(); } try { if (file.exists()) { share.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file)); startActivityForResult(Intent.createChooser(share, "Share Chart"), 1); } else { //displayToast("Please save your image before sharing."); } } catch (Exception e) { e.printStackTrace(); } return true; default: return super.onOptionsItemSelected(item); } return true; } 

分享xml:

    

我的操作栏中禁用了共享图标:

在此处输入图像描述

这不是您使用ShareActionProvider

只要有共享数据,就可以在ShareActionProvider上调用setShareIntent() 。 此方法采用表示共享操作的Intent对象 – 基本上就是share局部变量。 此时,操作栏中的提供程序将是可单击的,假设您的设备上的应用程序能够根据您选择的Intent进行共享。

此外,您不需要(或想要) onOptionsItemSelected() )中的R.id.action_share案例,因为ShareActionProvider不需要它,并且它可能会干扰正确的操作。

例如,这是一个实现ShareActionProvider的活动,用于共享输入构成内容视图的EditText文本:

 /*** Copyright (c) 2013 CommonsWare, LLC Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. From _The Busy Coder's Guide to Android Development_ http://commonsware.com/Android */ package com.commonsware.android.sap; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.text.Editable; import android.text.TextWatcher; import android.view.Menu; import android.widget.EditText; import android.widget.ShareActionProvider; import android.widget.Toast; public class MainActivity extends Activity implements ShareActionProvider.OnShareTargetSelectedListener, TextWatcher { private ShareActionProvider share=null; private Intent shareIntent=new Intent(Intent.ACTION_SEND); private EditText editor=null; @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.activity_main); shareIntent.setType("text/plain"); editor=(EditText)findViewById(R.id.editor); editor.addTextChangedListener(this); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.actions, menu); share= (ShareActionProvider)menu.findItem(R.id.share) .getActionProvider(); share.setOnShareTargetSelectedListener(this); return(super.onCreateOptionsMenu(menu)); } @Override public boolean onShareTargetSelected(ShareActionProvider source, Intent intent) { Toast.makeText(this, intent.getComponent().toString(), Toast.LENGTH_LONG).show(); return(false); } @Override public void afterTextChanged(Editable s) { shareIntent.putExtra(Intent.EXTRA_TEXT, editor.getText()); share.setShareIntent(shareIntent); } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { // ignored } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { // ignored } }