工具栏的徽标图标是否可点击？

Question

我已经使用过工具栏，所以现在我想在徽标图标上应用点击事件我怎样才能得到这个事件？

这是我完成的一些编码工作

Toolbar toolbar = null;
toolbar = (Toolbar) findViewById(R.id.actionToolbar);
setSupportActionBar(toolbar);
setTitle(null);
toolbar.setNavigationIcon(R.drawable.back);
toolbar.setNavigationContentDescription("BACK");
toolbar.setLogo(R.drawable.ic_launcher);
toolbar.setLogoDescription("LOGO");

toolbar.setNavigationOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Toast.makeText(MainActivity.this, "Nav", Toast.LENGTH_SHORT).show();
    }
});

我在这里设置了导航图标和标志图标，所以现在我想要标志图标的点击事件，怎么可能？

Answer 1

您需要先获取它的参考资料

View logoView = getToolbarLogoView(toolbar);
logoView.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        //logo clicked
    }
});

使用内容描述我们可以获得View参考。请参阅内联评论。

public static View getToolbarLogoIcon(Toolbar toolbar){
        //check if contentDescription previously was set
        boolean hadContentDescription = android.text.TextUtils.isEmpty(toolbar.getLogoDescription());
        String contentDescription = String.valueOf(!hadContentDescription ? toolbar.getLogoDescription() : "logoContentDescription");
        toolbar.setLogoDescription(contentDescription);
        ArrayList<View> potentialViews = new ArrayList<View>();
        //find the view based on it's content description, set programatically or with android:contentDescription
        toolbar.findViewsWithText(potentialViews,contentDescription, View.FIND_VIEWS_WITH_CONTENT_DESCRIPTION);
        //Nav icon is always instantiated at this point because calling setLogoDescription ensures its existence 
        View logoIcon = null;
        if(potentialViews.size() > 0){
            logoIcon = potentialViews.get(0);
        }
        //Clear content description if not previously present
        if(hadContentDescription)
            toolbar.setLogoDescription(null);
        return logoIcon;
    }

Answer 2

我在问自己同样的问题并遇到了这个问题。我对 Nikola Despotoski 采取了类似的方法，但实现方式不同。

我做的不是方法，而是：

// Set drawable
toolbar.setLogo(ContextCompat.getDrawable(context, R.drawable.logo));

// Find logo
View view = toolbar.getChildAt(1);
view.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
      // Perform actions
    }
  });

有点乱，但稍后会回来复习。共享以供讨论。

Answer 3

appcompat:V7 ActionBar 的徽标视图 (ImageView) 的长按事件行为

    ActionBar actionBar = getSupportActionBar();
    actionBar.setLogo(R.drawable.logo_vjet);
    actionBar.setDisplayShowTitleEnabled(false);
    actionBar.setDisplayShowHomeEnabled(true);
    actionBar.setDisplayUseLogoEnabled(true);
    //find ActionBar View(ToolBar)
    View view = getWindow().getDecorView().findViewById(android.support.v7.appcompat.R.id.action_bar);
    if(view != null && view instanceof Toolbar){
        try {
            //find ImageView mLogoView; in Toolbar using reflect
            Field logoView = view.getClass().getDeclaredField("mLogoView");
            logoView.setAccessible(true);
            ImageView logoImageVIew = (ImageView) logoView.get(view);
            if(logoImageVIew != null){
                logoImageVIew.setOnLongClickListener(new View.OnLongClickListener() {
                    @Override
                    public boolean onLongClick(View v) {
                        //do something
                        return false;
                    }
                });
            }
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }

仅测试 android 7.0

工具栏的徽标图标是否可点击？

Is toolbar's logo icon clickable?

android

toolbar

android-actionbar

android-5.0-lollipop