当我打开此活动时，默认情况下已打开抽屉。当我尝试关闭抽屉时，它没有关闭。总之，抽屉有故障。我已经附上了XML代码和JAVA代码。
这是XML文件代码：
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bg_home">
<include
android:id="@+id/action_bar"
layout="@layout/actionbar"
/>
<android.support.design.widget.NavigationView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:id="@+id/nav_view"
app:headerLayout="@layout/navigation"
app:menu="@menu/drawer_menu"/>
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginRight="20dp"
android:layout_marginBottom="210dp"
android:src="@drawable/add_to_cart"
android:elevation="6dp"
android:id="@+id/fab_place_order"
app:pressedTranslationZ="12dp"
app:backgroundTint="@color/fabOrder"
android:visibility="invisible"
/>
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginRight="20dp"
android:layout_marginBottom="150dp"
android:src="@drawable/ic_account_balance_wallet_black_24dp"
android:elevation="6dp"
android:id="@+id/fab_balance"
app:pressedTranslationZ="12dp"
app:backgroundTint="@color/fabBalance"
android:visibility="invisible"
/>
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginRight="20dp"
android:layout_marginBottom="90dp"
android:src="@drawable/ic_exit_to_app_black_24dp"
android:elevation="6dp"
android:id="@+id/fab_logout"
app:pressedTranslationZ="12dp"
app:backgroundTint="@color/fabExit"
android:visibility="invisible"
/>
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginRight="20dp"
android:layout_marginBottom="20dp"
android:src="@drawable/menu"
android:elevation="6dp"
android:id="@+id/fab_menu"
app:pressedTranslationZ="12dp"
android:backgroundTint="@color/fabMain"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ProgressBar
android:id="@+id/progressBar"
style="?android:attr/progressBarStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true" />
<TextView
android:id="@+id/label1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="230dp"
android:layout_marginEnd="80dp"
android:layout_marginRight="70dp"
android:text="Place Order"
android:textColor="#003200"
android:textStyle="bold"
android:visibility="invisible" />
<TextView
android:id="@+id/label2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignEnd="@+id/label1"
android:layout_alignLeft="@+id/label1"
android:layout_alignParentBottom="true"
android:layout_alignRight="@+id/label1"
android:layout_marginBottom="170dp"
android:text="Check Balance"
android:textColor="#000032"
android:textStyle="bold"
android:visibility="invisible" />
<TextView
android:id="@+id/label3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignEnd="@+id/label1"
android:layout_alignParentBottom="true"
android:layout_alignRight="@+id/label1"
android:layout_marginBottom="110dp"
android:text="Logout"
android:textColor="#320000"
android:textStyle="bold"
android:visibility="invisible" />
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
</android.support.v4.widget.DrawerLayout>
这是JAVA文件代码：
public class HomeActivity extends AppCompatActivity {
ConnectionDetector connectionDetector = new ConnectionDetector(this);
DatabaseHelper helper = new DatabaseHelper(this);
Handler handler = new Handler();
FloatingActionButton fab_menu,fab_balance,fab_logout,fab_order;
Animation fabOpen,fabClose,fabClockwise,fabAnticlockwise;
boolean isOpen = false, status = false;
ProgressBar progressBar;
private boolean isUserClickedBackButton = false;
private DrawerLayout drawerLayout;
TextView t1,t2,t3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
helper.startFirebaseDB();
Toolbar toolbar = findViewById(R.id.action_bar);
toolbar.setTitleTextColor(getResources().getColor(R.color.white));
setSupportActionBar(toolbar);
drawerLayout = findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar,R.string.navigation_drawer_open,R.string.navigation_drawer_close);
toggle.syncState();
progressBar = findViewById(R.id.progressBar);
fab_menu = findViewById(R.id.fab_menu);
fab_menu.setEnabled(false);
fab_order = findViewById(R.id.fab_place_order);
fab_balance = findViewById(R.id.fab_balance);
fab_logout = findViewById(R.id.fab_logout);
t1 = findViewById(R.id.label1);
t2 = findViewById(R.id.label2);
t3 = findViewById(R.id.label3);
fabOpen= AnimationUtils.loadAnimation(getApplicationContext(),R.anim.fab_open);
fabClose= AnimationUtils.loadAnimation(getApplicationContext(),R.anim.fab_close);
fabClockwise= AnimationUtils.loadAnimation(getApplicationContext(),R.anim.rotate_clockwise);
fabAnticlockwise= AnimationUtils.loadAnimation(getApplicationContext(),R.anim.rotate_anticlockwise);
handler.postDelayed(new Runnable() {
@Override
public void run() {
progressBar.setVisibility(View.GONE);
fab_menu.setEnabled(true);
}
},2000);
fab_menu.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(isOpen)
{
fab_order.startAnimation(fabClose);
fab_balance.startAnimation(fabClose);
fab_logout.startAnimation(fabClose);
fab_menu.startAnimation(fabAnticlockwise);
fab_balance.setClickable(false);
fab_logout.setClickable(false);
handler.postDelayed(new Runnable() {
@Override
public void run() {
t1.setVisibility(View.INVISIBLE);
t2.setVisibility(View.INVISIBLE);
t3.setVisibility(View.INVISIBLE);
}
},200);
isOpen = false;
}
else
{
fab_order.startAnimation(fabOpen);
fab_balance.startAnimation(fabOpen);
fab_logout.startAnimation(fabOpen);
fab_menu.startAnimation(fabClockwise);
fab_balance.setClickable(true);
fab_logout.setClickable(true);
isOpen = true;
handler.postDelayed(new Runnable() {
@Override
public void run() {
t1.setVisibility(View.VISIBLE);
t2.setVisibility(View.VISIBLE);
t3.setVisibility(View.VISIBLE);
}
},200);
}
}
});
fab_order.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
status = helper.checkUserStatus(helper.getUser());
if(!connectionDetector.isConnected()) {
Toast.makeText(HomeActivity.this, "Check your internet connection !!!", Toast.LENGTH_LONG).show();
return;
}
else if(!status) {
Toast t1 = Toast.makeText(HomeActivity.this, "Access Denied !!!", Toast.LENGTH_LONG);
Toast t2 = Toast.makeText(HomeActivity.this, "Please contact: Ayaz Handloom Store", Toast.LENGTH_LONG);
t1.setGravity(Gravity.CENTER,0,0);
t1.show();
t2.setGravity(Gravity.CENTER,0,0);
t2.show();
return;
}
else {
Intent newOrder = new Intent(HomeActivity.this, NewOrderActivity.class);
startActivity(newOrder);
finish();
}
}
});
fab_balance.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent balance = new Intent(HomeActivity.this,BalanceActivity.class);
startActivity(balance);
finish();
}
});
fab_logout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent logout = new Intent(HomeActivity.this,MainActivity.class);
helper.logout();
Toast.makeText(HomeActivity.this, "Logout success !!!", Toast.LENGTH_LONG).show();
startActivity(logout);
finish();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu,menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId())
{
case R.id.edit_profile:
break;
case R.id.change_password:
break;
case R.id.settings:
break;
case R.id.logout:
DialogInterface.OnClickListener dialogBox = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which){
case DialogInterface.BUTTON_POSITIVE:
Intent logout = new Intent(HomeActivity.this,MainActivity.class);
helper.logout();
Toast.makeText(HomeActivity.this, "Logout success !!!", Toast.LENGTH_LONG).show();
startActivity(logout);
finish();
break;
case DialogInterface.BUTTON_NEGATIVE:
Toast cancel = Toast.makeText(HomeActivity.this, "Request cancelled !!!", Toast.LENGTH_SHORT);
cancel.setGravity(Gravity.CENTER,0,0);
cancel.show();
break;
}
}
};
AlertDialog.Builder builder = new AlertDialog.Builder(HomeActivity.this);
builder.setMessage("Are you sure to logout?").setPositiveButton("Yes", dialogBox).setNegativeButton("No", dialogBox).show();
break;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onBackPressed() {
if (drawerLayout.isDrawerOpen(GravityCompat.START))
drawerLayout.closeDrawer(GravityCompat.START);
else {
if (!isUserClickedBackButton) {
Toast.makeText(this, "Press back key again for Main Page !!!", Toast.LENGTH_LONG).show();
isUserClickedBackButton = true;
handler.postDelayed(new Runnable() {
@Override
public void run() {
isUserClickedBackButton = false;
}
}, 3000);
} else {
Intent back = new Intent(HomeActivity.this, MainActivity.class);
startActivity(back);
finish();
}
}
}
}
如果我删除了DrawerLayout内部的XML代码，则可以正常工作。
答案 0 :(得分：0)
您忘记在drawerLayout.addDrawerListener(toggle);之前添加toggle.syncState();