java - 工具栏汉堡包干扰后退箭头按钮

Question

我正在设置一个装有汉堡包的抽屉，当我打开一个 fragment 时，我想删除汉堡包并将其替换为调用 onBackPressed() 的箭头。

发生的情况是汉堡包被箭头替换，但箭头上的监听器没有被调用。如果我完全删除 ActionBarDrawerToggle 它将起作用。我该如何解决这个问题？

打开新 fragment :

    Fragment_Subjects frag = new Fragment_Subjects();
    fm.beginTransaction()
            .replace(R.id.mainContainer, frag)
            .addToBackStack(null)
            .commit();
    toggle.setDrawerIndicatorEnabled(false);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setHomeButtonEnabled(true);

设置抽屉开关:

    drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    toggle = new ActionBarDrawerToggle(this, drawer, mToolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close); //back arrow works when this line is removed
    assert drawer != null;
    drawer.setDrawerListener(toggle);
    toggle.syncState();

后退箭头监听器:

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case android.R.id.home:
            onBackPressed();
            return true;
    }
    return super.onOptionsItemSelected(item);
}

onBackPressed:

@Override
public void onBackPressed() {

    if(drawer.isDrawerOpen(Gravity.START)){
        drawer.closeDrawer(Gravity.START);
    }else{
        super.onBackPressed();
    }
}

Answer 1

试试这个:

 toolbar.setNavigationOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
              onBackPressed();
        }
 });