text 活动的3点菜单

Posted 2021-05-01

    //In MainActivity
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == R.id.all) {
            display = "all";
            lv.setAdapter(customAdapter);
        } else if (id == R.id.completed) {
            display = "completed";

            lv.setAdapter(customAdapterCompleted);
        } else if (id == R.id.pending) {
            display = "pending";

            lv.setAdapter(customAdapterPending);
        }
        return super.onOptionsItemSelected(item);
    }
    
    //XML file for menu (a folder unside res)
    
    <?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/all"
        android:orderInCategory="100"
        android:title="Show All"
        app:showAsAction="never" />

    <item
        android:id="@+id/completed"
        android:orderInCategory="200"
        android:title="Show Completed"
        app:showAsAction="never" />

    <item
        android:id="@+id/pending"
        android:orderInCategory="200"
        android:title="Show Pending"
        app:showAsAction="never" />

</menu>