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我想將左上角的默認DrawerLayout圖標更改爲我自己的圖像，但我不知道爲什麼它不適用於加載應用程序。只有打開或關閉側邊菜單時，圖標纔會變化。我也想禁用動畫，它在我改變圖標後被禁用，但只有在它被打開和關閉後纔會發生。我不知道爲什麼，這並不在活動如何替換android中的默認導航圖標？
actionBar = (Toolbar) findViewById(R.id.custom_screen_toolbar);
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
drawerLayout, actionBar, R.string.drawer_open, R.string.drawer_close) {
/** Called when a drawer has settled in a completely closed state. */
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
actionBar.setTitle("Nav Menu Close");
actionBar.setNavigationIcon(R.drawable.action_bar_menu);
}
/** Called when a drawer has settled in a completely open state. */
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
actionBar.setTitle("Nav Menu Open");
actionBar.setNavigationIcon(R.drawable.action_bar_back_icon);
}
};
// Set the drawer toggle as the DrawerListener
drawerLayout.setDrawerListener(drawerToggle);
actionBar.setSubtitleTextColor(getResources().getColor(
R.color.light_gray));
actionBar.setBackgroundResource(R.drawable.divider_action_bar);
actionBar.setNavigationIcon(R.drawable.action_bar_menu);
setSupportActionBar(actionBar);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);