How to Add a CheckBox in Toolbar with custom background - android

问题

Hi i'm new in android and here i want to Have a CheckBox in my Toolbar with a custom background my use case is : i want to add current post(in my activity) to favorites list by a checkbox in toolbar and i wanna use a star(on/off) icon.

i tried this but the checkBox is null

<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item android:id="@+id/shwo_menu_download_mp3"
    android:title="@string/download_mp3"
    app:showAsAction="never"/>
<item android:id="@+id/show_menu_add_to_fav"
    android:checked="true"
    android:enabled="true"
    app:showAsAction="always"
    />
<item android:id="@+id/show_menu_setting"
    android:title="@string/show_menu_setting"
    app:showAsAction="never" />

and my Activity:

 @Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_show_speech);
    initCheckBox();
    ...
}

CheckBox checkBoxFav;

private void initCheckBox() {
    checkBoxFav = (CheckBox) findViewById(R.id.show_menu_add_to_fav);

    checkBoxFav.setText("some Text");
}

回答1:

with toolbar you can do this

setSupportActionBar(toolbar);
View view= getLayoutInflater().inflate(R.layout.view_, null);
Checkbox chbox = view.findViewById(..);
//chbox.do what u want with it
toolbar.addView(logo);

the view layout contains a checkbox and design it as you wish

回答2:

You have to follow these steps:
1. Create a toolbar and add it to your activity. I'm not going to explain that since there are a ton of tutorials on the matter.
2. Create a menu with a checkbox widget in it:

<?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/menu_star"
        android:checkable="true"
        app:actionViewClass="android.widget.CheckBox"
        app:showAsAction="ifRoom"
        android:title="@string/favorite" />

</menu>

Add the set of icons in the drawable folder. One icon for the unchecked state and one icon for the checked state.

Create a resource file and name it whatever you want (In this example the name is star.xml), add it to the drawable folder and insert the following code in it:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:state_checked="true"
        android:drawable="@drawable/star_black"
        />
    <item
        android:state_selected="true"
        android:drawable="@drawable/star_black"
        />
    <item
        android:state_checked="false"
        android:drawable="@drawable/star_border_black"
        />
   <item
        android:drawable="@drawable/star_border_black"
        />
</selector>

create an onCreateOptionsMenu method in your activity and insert the following code. The icon of the checkbox will change automatically after getting checked or unchecked.

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater menuInflater = getMenuInflater();
    menuInflater.inflate(R.menu.menu,menu);
    CheckBox checkBox = (CheckBox)menu.findItem(R.id.menu_star).getActionView();
    checkBox.setButtonDrawable(R.drawable.star);//set the icon to star.xml


    checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
            //set the action of the checkbox
    }
    });



    return super.onCreateOptionsMenu(menu);
}

来源：https://stackoverflow.com/questions/43248146/how-to-add-a-checkbox-in-toolbar-with-custom-background-android

标签

android

checkbox