工具栏汉堡包干扰后退箭头按钮

时间:2016-07-06 17:53:03

标签: java android

我正在拿一个带汉堡包的抽屉,当我打开一个片段时我想要移除汉堡包并用一个叫onBackPressed()的箭头替换它。

正在发生的事情是汉堡被箭头取代,但箭头上的聆听者却没有被召唤。如果我完全删除ActionBarDrawerToggle它将起作用。我该如何解决这个问题?

打开新片段:

    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);

设置抽屉切换:

    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();

后退箭头听众:

@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();
    }
}

1 个答案:

答案 0 :(得分:1)

试试这个:

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