Question

我正在构建一个我需要共享图片的应用。我已经完成了XML并显示了分享按钮，但是你无法点击它。

以下是我在XML中按钮的代码：

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:id="@+id/menu_item_scan"
          android:icon="@drawable/scanlogo"
          android:showAsAction="ifRoom"
          android:title="Scan" />
    <item android:id="@+id/menu_item_share"
          android:showAsAction="ifRoom"
          android:title="Share"
          android:actionProviderClass="android.widget.ShareActionProvider" />
</menu>

这是我给菜单充气的地方：

public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.action_bar_share_menu, menu);
    return true;
}

这一切都有效并显示，但不可点击。这是我尝试使其可点击的地方：

public boolean onOptionsItemSelected(MenuItem item) {
        // Handle presses on the action bar items
        switch (item.getItemId()) {
            case R.id.menu_item_share:
                Intent ShareIntent = new Intent();
                String pathofBmp = MediaStore.Images.Media.insertImage(getContentResolver(), QRMap,"QRCode", null);
                Uri bmpUri = Uri.parse(pathofBmp);
                ShareIntent.setAction(Intent.ACTION_SEND);
                ShareIntent.putExtra(Intent.EXTRA_STREAM, bmpUri);


  ShareIntent.setType("image/png");
            mShareActionProvider.setShareIntent(ShareIntent);
            return true;

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

非常感谢任何帮助！

Answer 1

删除R.id.menu_item_share方法的onOptionsItemSelected()个案。将该代码移至应用中的其他位置（例如onCreateOptionsMenu()），以便在显示之前配置ShareActionProvider。

例如，以下是一个从one of my sample projects配置ShareActionProvider的活动：

/***
  Copyright (c) 2012 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.content.Intent;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import android.widget.Toast;
import com.actionbarsherlock.app.SherlockActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuInflater;
import com.actionbarsherlock.widget.ShareActionProvider;

public class MainActivity extends SherlockActivity 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) {
    new MenuInflater(this).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
  }
}

在我的情况下，这是使用ActionBarSherlock，但是对于本机操作栏，同样的过程也适用。

在Action Bar上分享按钮？

1 个答案: