Question

我只是想在我的选项菜单中添加其他活动我的应用程序显示其菜单定义为

public class OptionsMenuTesterActivity extends Activity {
        /** Called when the activity is first created. */
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
        }
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            super.onCreateOptionsMenu(menu);

            // Create an Intent that describes the requirements to fulfill, to be included
            // in our menu. The offering app must include a category value of Intent.CATEGORY_ALTERNATIVE. 
            Intent intent = new Intent(null,getIntent().getData());
            intent.addCategory(Intent.CATEGORY_ALTERNATIVE);

            // Search for, and populate the menu with, acceptable offering applications.
            menu.addIntentOptions(
                    Menu.CATEGORY_ALTERNATIVE,  // Menu group 
                 0,      // Unique item ID (none)
                 0,      // Order for the items (none)
                 this.getComponentName(),   // The current Activity name
                 null,   // Specific items to place first (none)
                 intent, // Intent created above that describes our requirements
                 0,      // Additional flags to control items (none)
                 null);  // Array of MenuItems that corrolate to specific items (none)

            return true;
        }
    }

现在我用一个活动创建了另一个简单的应用程序，其androidmaifest看起来如下

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.idg.test.dynamicoptionsmenu"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="10" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".DynamicOptionsMenuTesterActivity"
            android:label="@string/app_name" >
            <intent-filter label="test menu">
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
                 <category android:name="android.intent.category.ALTERNATIVE" />

            </intent-filter>
        </activity>
    </application>

</manifest>

我已启动这两个应用程序。但是当我点击第一个应用程序的菜单时，我什么也看不见你能帮我告诉我这里缺少什么。

Answer 1

public void openOptionsMenu() { 
    // TODO Auto-generated method stub 
    super.openOptionsMenu(); 
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    //call the base class to include system menus
    super.onCreateOptionsMenu(menu);

        int group1 = 1;
        MenuItem bakchome = menu.add(group1,1,1,"title");
        bakchome.setIcon(R.drawable.ic_menu_add);

    return true;
}

@Override 
public boolean onOptionsItemSelected(MenuItem item) {
        switch(item.getItemId()) {
        case 1:

        Intent intent1 = new Intent(getApplicationContext(), yourintent.class);
        intent1.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            startActivity(intent1);
            break;

        }

    return true;
}

Answer 2

这个问题有点老了，但我花了一段时间才完成它，所以也许它会为其他人节省一些时间和挫折感。希望它有所帮助...

以下是我创建动态菜单以提供共享图像的所有可用选项的方法。我已经构建了自己的topmenu而不是使用ActionBar。我的菜单项以ImageButton的{{1}}方法onCreate开始...

Activity

创建可启动列表：

    ImageButton shareBtn = (ImageButton)findViewById(R.id.shareBtn);
    shareBtn.setOnClickListener(new View.OnClickListener() {

        // receive launchables (to build menu items)
        List<ResolveInfo> launchables = getLaunchablesToShareWith();
        PackageManager pm=getPackageManager();

        @Override
        public void onClick(View v) {
            //Creating the instance of PopupMenu
            PopupMenu popup = new PopupMenu(getApplicationContext(), v);

            //enable icons using Reflection...
            try {
                Field[] fields = popup.getClass().getDeclaredFields();
                for (Field field : fields) {
                    if ("mPopup".equals(field.getName())) {
                        field.setAccessible(true);
                        Object menuPopupHelper = field.get(popup);
                        Class<?> classPopupHelper = Class.forName(menuPopupHelper
                                .getClass().getName());
                        Method setForceIcons = classPopupHelper.getMethod(
                                "setForceShowIcon", boolean.class);
                        setForceIcons.invoke(menuPopupHelper, true);
                        break;
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }


            //Inflating the Popup using xml file
            popup.getMenuInflater().inflate(R.menu.popupmenu_your_activity, popup.getMenu());

            // add items
            for (ListIterator<ResolveInfo> iterator = launchables.listIterator(); iterator.hasNext(); ) {

                // extract data from launchables
                ResolveInfo resolveInfo = iterator.next();
                String title = resolveInfo.activityInfo.applicationInfo.loadLabel(pm).toString();
                String packageName = resolveInfo.activityInfo.applicationInfo.packageName;
                Drawable appIcon = null;
                try {
                    appIcon = pm.getApplicationIcon(packageName);
                } catch (PackageManager.NameNotFoundException e) {
                    e.printStackTrace();
                    continue;
                }

                // create & add item
                popup.getMenu().add(0, 0, 0, title)
                                .setIcon(appIcon)
                                .setIntent( getShareIntent().setPackage(packageName) )
                                .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
                                    public boolean onMenuItemClick(MenuItem item) {
                                        prepareImageToShare(true);
                                        startActivity(item.getIntent());
                                        return true;
                                    }
                                });
            }

            popup.show();
        }
    });

创建共享private List<ResolveInfo> getLaunchablesToShareWith() { PackageManager pm = getPackageManager(); Intent intent = new Intent(Intent.ACTION_SEND, null); intent.setType("image/png"); List<ResolveInfo> launchables=pm.queryIntentActivities(intent, 0); Collections.sort(launchables, new ResolveInfo.DisplayNameComparator(pm)); return launchables; }：

Intent

菜单布局文件（ popupmenu_your_activity.xml ）如下所示：

private Intent getShareIntent() {
    // File helper returns something like return Uri.parse("file:///storage/emulated/0/YourApp/output/image.png");
    Uri imageUri = FileHelper.getOutputPathAsUri(Files.SHARED_OUTPUT_FILE.getFilename(), Paths.OUTPUT_FOLDER_PATH.getPath(), true); 

    Intent shareIntent = new Intent(Intent.ACTION_SEND);
    shareIntent.setData(imageUri);
    shareIntent.setType("image/png");
    shareIntent.putExtra(Intent.EXTRA_STREAM, imageUri);

    return shareIntent;
}

android：动态添加到选项菜单

2 个答案: