Java 导航抽屉关闭后如何执行操作,否则Android应用程序会出现延迟
我正在尝试在我的应用程序中实现一个导航抽屉。一切都很好,除了切换到新活动时,它会在抽屉动画完成之前尝试切换。这会导致动画变得非常滞后,并且看起来非常糟糕。我能做点像这样的事吗Java 导航抽屉关闭后如何执行操作,否则Android应用程序会出现延迟,java,android,navigation-drawer,Java,Android,Navigation Drawer,我正在尝试在我的应用程序中实现一个导航抽屉。一切都很好,除了切换到新活动时,它会在抽屉动画完成之前尝试切换。这会导致动画变得非常滞后,并且看起来非常糟糕。我能做点像这样的事吗 once drawer is closed --> start the new activity 以下是我的BaseActivity代码: public class BaseActivity extends ActionBarActivity { private DrawerLayout mDrawerLayout
once drawer is closed --> start the new activity
以下是我的BaseActivity代码:
public class BaseActivity extends ActionBarActivity {
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
protected RelativeLayout _completeLayout, _activityLayout;
// nav drawer title
private CharSequence mDrawerTitle;
// used to store app title
private CharSequence mTitle;
private ArrayList<NavDrawerItem> navDrawerItems;
private NavDrawerListAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.drawer);
// if (savedInstanceState == null) {
// // on first time display view for first nav item
// // displayView(0);
// }
}
public void set(String[] navMenuTitles, TypedArray navMenuIcons) {
mTitle = mDrawerTitle = getTitle();
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
navDrawerItems = new ArrayList<NavDrawerItem>();
// adding nav drawer items
if (navMenuIcons == null) {
for (int i = 0; i < navMenuTitles.length; i++) {
navDrawerItems.add(new NavDrawerItem(navMenuTitles[i]));
}
} else {
for (int i = 0; i < navMenuTitles.length; i++) {
navDrawerItems.add(new NavDrawerItem(navMenuTitles[i],
navMenuIcons.getResourceId(i, -1)));
}
}
mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
// setting the nav drawer list adapter
adapter = new NavDrawerListAdapter(getApplicationContext(),
navDrawerItems);
mDrawerList.setAdapter(adapter);
// enabling action bar app icon and behaving it as toggle button
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
// getSupportActionBar().setIcon(R.drawable.ic_drawer);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, // nav menu toggle icon
R.string.app_name, // nav drawer open - description for
// accessibility
R.string.app_name // nav drawer close - description for
// accessibility
) {
public void onDrawerClosed(View view) {
getSupportActionBar().setTitle(mTitle);
// calling onPrepareOptionsMenu() to show action bar icons
supportInvalidateOptionsMenu();
}
public void onDrawerOpened(View drawerView) {
getSupportActionBar().setTitle(mDrawerTitle);
// calling onPrepareOptionsMenu() to hide action bar icons
supportInvalidateOptionsMenu();
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
}
private class SlideMenuClickListener implements
ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// display view for selected nav drawer item
displayView(position);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// getSupportMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == android.R.id.home) {
if (mDrawerLayout.isDrawerOpen(mDrawerList)) {
mDrawerLayout.closeDrawer(mDrawerList);
} else {
mDrawerLayout.openDrawer(mDrawerList);
}
}
return super.onOptionsItemSelected(item);
}
/***
* Called when invalidateOptionsMenu() is triggered
*/
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
// if nav drawer is opened, hide the action items
// boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
// menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
private void displayView(int position) {
switch (position) {
case 0:
// Intent intent = new Intent(this, First.class);
// startActivity(intent);
// finish();
break;
case 1:
Intent intent1 = new Intent(this, SecondActivity.class);
startActivity(intent1);
finish();
break;
default:
break;
}
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
mDrawerLayout.closeDrawer(mDrawerList);
}
@Override
public void setTitle(CharSequence title) {
mTitle = title;
getActionBar().setTitle(mTitle);
}
/**
* When using the ActionBarDrawerToggle, you must call it during
* onPostCreate() and onConfigurationChanged()...
*/
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
}
公共类BaseActivity扩展了ActionBarActivity{
私人抽屉布局mDrawerLayout;
私有列表视图mDrawerList;
私有操作bardrawertoggle mDrawerToggle;
受保护的相对布局、活动布局;
//导航抽屉标题
私有字符序列mDrawerTitle;
//用于存储应用程序标题
私有字符序列mTitle;
私人ArrayList NavWrites;
专用导航适配器;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(右布局抽屉);
//如果(savedInstanceState==null){
////第一个导航项目的第一次显示视图
////显示视图(0);
// }
}
公共无效集(字符串[]navMenuTitles,类型Darray navMenuIcons){
mTitle=mDrawerTitle=getTitle();
mDrawerLayout=(抽屉布局)findViewById(R.id.抽屉布局);
mDrawerList=(ListView)findViewById(R.id.left\u抽屉);
navDrawerItems=新的ArrayList();
//添加导航抽屉项目
如果(navMenuIcons==null){
for(int i=0;i
谢谢。只有在仿真器或旧设备上进行测试时,才会出现拉格效应。在调用类似的意图之前,请尝试关闭抽屉
case 1:
Intent intent1 = new Intent(this, SecondActivity.class);
mDrawerLayout.closeDrawer(mDrawerList);
startActivity(intent1);
finish();
break;
谢谢你的来信。尽管存在逻辑,
mDrawerLayout.closeDrawer(mDrawerList)代码>仅在调用新活动时才开始关闭抽屉。我试过了,但还是有点迟钝/口吃。我正在寻找更多的方法,以确保在开始新活动之前关闭它。mayn