Question

我使用自定义导航图标，因此我需要drawerToggle.setDrawerIndicatorEnabled(false);。但现在，单击我的自定义图标时，我的Navdrawer无法打开。

任何想法如何实现这一目标？我还需要ActionBarDrawerToggle吗？

public void setUpActionBar() {
    actionBar = (Toolbar) findViewById(R.id.custom_screen_toolbar);
    setSupportActionBar(actionBar);

    actionBar.setBackgroundResource(R.drawable.divider_action_bar);
    actionBar.setNavigationIcon(R.drawable.action_bar_menu);

    drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

    drawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
    drawerLayout, /* DrawerLayout object */
    actionBar, /* custom action bar */
    R.string.drawer_open, /* "open drawer" description */
    R.string.drawer_close /* "close drawer" description */
    ) {

        /** Called when a drawer has settled in a completely closed state. */
        public void onDrawerClosed(View view) {
            super.onDrawerClosed(view);
        }

        @Override
        public void onDrawerSlide(View drawerView, float slideOffset) {
            super.onDrawerSlide(drawerView, 0);
        }

        /** Called when a drawer has settled in a completely open state. */
        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
        }
    };

    drawerLayout.setDrawerListener(drawerToggle);
    drawerToggle.setDrawerIndicatorEnabled(false);
    drawerToggle.syncState();
}

我也尝试使用drawerToggle.setHomeAsUpIndicator(R.drawable.icon);，这样我就可以在不使用操作栏中的setNavigationIcon的情况下更改te图标，但它不会更改图标。

Answer 1

如果您拨打from django.db import models from datetime import datetime from django.contrib import admin class Category(models.Model): category_name = models.CharField(max_length=200) category_id = models.CharField(max_length=200) class Meta: app_label = 'ebay' def __unicode__(self): return u'%s' % (self.category_id) class MyCategory(Category): @staticmethod def autocomplete_search_fields(): return ("category_name__icontains", "category_id__icontains") class Meta: proxy = True class Listing(models.Model): ebay_id = models.CharField(max_length=200,null=True) amazon_id = models.CharField(max_length=200) category = models.ForeignKey(MyCategory) class Meta: app_label = 'ebay' def __unicode__(self): return u'%s' % (self.ebay_id) class ListingOptions(admin.ModelAdmin): # define the raw_id_fields raw_id_fields = ('category',) # define the autocomplete_lookup_fields autocomplete_lookup_fields = { 'fk': ['category'], }和drawerToggle.setHomeAsUpIndicator(R.drawable.icon);，则会启动

drawerToggle.setDrawerIndicatorEnabled(false);

和

public void setHomeAsUpIndicator(Drawable indicator) {
        if(indicator == null) {
            this.mHomeAsUpIndicator = this.getThemeUpIndicator();
            this.mHasCustomUpIndicator = false;
        } else {
            this.mHomeAsUpIndicator = indicator;
            this.mHasCustomUpIndicator = true;
        }

        if(!this.mDrawerIndicatorEnabled) {
            this.setActionBarUpIndicator(this.mHomeAsUpIndicator, 0);
        }

虽然您调用了setHomeAsUpIndicator（Drawable指示符），因为mDrawerIndicatorEnabled为false，因此它不会更改图标。（但如果您先调用public void setDrawerIndicatorEnabled(boolean enable) { if(enable != this.mDrawerIndicatorEnabled) {//if you set enable be "false", below sentences do not run, because the default value of mDrawerIndicatorEnabled is false if(enable) { this.setActionBarUpIndicator((Drawable)this.mSlider, this.mDrawerLayout.isDrawerOpen(8388611)?this.mCloseDrawerContentDescRes:this.mOpenDrawerContentDescRes); } else { this.setActionBarUpIndicator(this.mHomeAsUpIndicator, 0); } this.mDrawerIndicatorEnabled = enable; } }然后调用setDrawerIndicatorEnabled，则可以也改变图标。）

如果您致电setHomeAsUpIndicator，图标会发生变化，因为它会调用toolbar.setNavigationIcon(R.mipmap.ic_launcher);中的setActionBarUpIndicator。您将看到工具栏将为其导航图标设置此drawable。

ActionBarDrawerToggle.java

如果你想通过点击打开抽屉菜单，你应该为这个＆＃39; navigationIcon＆＃39;设置一个点击监听器，因为在你调用它之后，系统将无法为你提供帮助。

Answer 2

setDrawerIndicatorEnabled(false);将禁用抽屉指示器，因此我的猜测是它需要设置为true。此外，如果您需要抽屉的自定义图标，您可以将其设置为，

mDrawerToggle = new ActionBarDrawerToggle(
                this,                  /* host Activity */
                mDrawerLayout,         /* DrawerLayout object */
                R.drawable.earth,  /* nav drawer image to replace 'Up' caret */
                R.string.drawer_open,  /* "open drawer" description for accessibility */
                R.string.drawer_close  /* "close drawer" description for accessibility */
                )

drawable参数应该替换up caret。

有用的link下载示例。

单击导航图标时为什么我的NavDrawer没有打开？

2 个答案: