java - 抽屉导航需要时间打开和关闭

Question

我在我的应用程序中添加了导航 View 和抽屉布局。当我打开和关闭抽屉时，它会及时滞后。缓慢地打开和关闭。我在 4.4 版本和 6.0 版本上都遇到了这个问题，但没有 4.4 版本那么明显。

当我在 4.4 设备上运行时，当我打开抽屉时，我注意到日志中的消息表明主线程上可能做了太多工作。

所以我尝试注释除抽屉导航和选项菜单代码之外的所有代码。所以在那之后我发现它运作得很好。

是这个问题吗？或者可能存在一些内存问题？但在更大的内存设备上我也发现了这个问题。

我需要为其他代码创建另一个 Activity 吗？那么那个抽屉会工作得更快吗？

我还尝试创建一个 fragment 并将其替换到主要 Activity 的框架布局中以分隔代码。但它仍然滞后。

如果我创建新 Activity ，我仍然需要该 Activity 中的所有导航代码，这将再次是同样的事情。

我不明白可能是什么问题。谁能帮忙..谢谢..

这里是代码:

public class MainActivity extends AppCompatActivity implements GetContactsAsyncTask.ContactGetCallBack,UpdateUserAsyncTask.UpdateUserCallBack {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        contactDb = new ContactTableHelper(MainActivity.this);
        mDb = new UserTableHelper(MainActivity.this);

        boolean result = Utility.checkAndRequestPermissions(MainActivity.this);

        LocalBroadcastManager.getInstance(this).registerReceiver(mRegistrationBroadcastReceiver,
                new IntentFilter(REGISTRATION_COMPLETE));
        LocalBroadcastManager.getInstance(this).registerReceiver(mRegistrationBroadcastReceiver,
                new IntentFilter(PUSH_NOTIFICATION));

        NotificationUtils.clearNotifications(getApplicationContext());


        sharedpreferences = getSharedPreferences("UserProfile", Context.MODE_PRIVATE);

        mUserId = sharedpreferences.getString("userId", "");

        firstTimeLogin = sharedpreferences.getBoolean("login", false);

        refreshedToken = sharedpreferences.getString("deviceId", "");

        parentLayout = (LinearLayout) findViewById(R.id.toolbar_container);

        setupView();

        mUser = new User();

        url = sharedpreferences.getString("url", "");

        contactList = new ArrayList<Contact>();

        txtuserName = (TextView) findViewById(R.id.txtusername);
        txtmobile = (TextView) findViewById(R.id.txtmobile);
        profileImageView = (CircleImageView) findViewById(R.id.thumbnail);

        if (profileImageView != null) {
            profileImageView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    drawerLayout.closeDrawers();
                    Intent Intent = new Intent(MainActivity.this, ProfileActivity.class);
                    Intent.putExtra("user", mUser);
                    Intent.putExtra("url", url);
                    startActivity(Intent);
                }
            });
        }

        BitmapFactory.Options bmOptions = new BitmapFactory.Options();
        Bitmap bitmap = BitmapFactory.decodeFile(image.getPath(), bmOptions);

        if (bitmap != null) {
            profileImageView.setImageBitmap(bitmap);
        } else {
            profileImageView.setImageDrawable(ContextCompat.getDrawable(MainActivity.this, R.drawable.ic_account_circle_white_48dp));
        }

        ImageView sync = (ImageView) findViewById(R.id.sync);

        sync.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                contactList.clear();
                contactDb.deleteAllContacts();

                GetContactsAsyncTask getContactsAsyncTask = new GetContactsAsyncTask(MainActivity.this, MainActivity.this, mUserId, MainActivity.this);
                getContactsAsyncTask.execute(mUserId);

            }
        });
    }

    void setupView() {
        File sd = Environment.getExternalStorageDirectory();
        image = new File(sd + "/Profile", "Profile_Image.png");

        drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

        navigationView = (NavigationView) findViewById(R.id.navigation_view);


        navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {

            @Override
            public boolean onNavigationItemSelected(MenuItem menuItem) {
                drawerLayout.closeDrawers();
                menuItem.setChecked(true);

                FragmentManager fragmentManager = getSupportFragmentManager();

                switch (menuItem.getItemId()) {

                    case R.id.nav_menu_contacts:
                       fragmentManager.beginTransaction().replace(R.id.container, fragment).commit();

                        break;

                    case R.id.nav_menu_settings:

                        Intent i = new Intent(MainActivity.this, PreferencesActivity.class);
                        i.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
                        startActivity(i);

                        break;

                    case R.id.nav_log_out:

                        SharedPreferences pref = getSharedPreferences("UserProfile", MODE_PRIVATE);
                        SharedPreferences.Editor editor = pref.edit();
                        editor.remove("UserUsername");
                        editor.remove("userId");
                        editor.remove("url");
                        editor.remove("login");
                        editor.remove("company");
                        editor.remove("emailId");
                        editor.remove("profileImage");
                        editor.remove("fullName");
                        editor.remove("homeAddress");
                        editor.remove("workAddress");
                        editor.remove("workPhone");
                        editor.remove("pass");
                        editor.remove("jobTitle");
                        editor.remove("mobileNo");
                        editor.commit();

                        mDb.deleteAllUsers();
                        contactDb.deleteAllContacts();
                        UpdateTokenAsyncTask updateTokenAsyncTask = new UpdateTokenAsyncTask(MainActivity.this, mUserId, "");
                        updateTokenAsyncTask.execute(mUserId, "");

                        finish();
                        i = new Intent(MainActivity.this, LoginActivity.class);
                        i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
                        i.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
                        startActivity(i);

                        break;

                    case R.id.nav_invite:

                        i = new Intent(MainActivity.this, InviteContactsActivity.class);
                        i.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
                        startActivity(i);

                        break;
                }
                return true;
            }
        });

        Toolbar toolbar = (Toolbar) findViewById(R.id.main_toolbar);
        TextView mTitle = (TextView) findViewById(R.id.toolbar_title);

        final ImageView menu = (ImageView) findViewById(R.id.menu);

        menu.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                PopupMenu popup = new PopupMenu(MainActivity.this, menu);

                popup.getMenuInflater().inflate(R.menu.main_pop_up_menu, popup.getMenu());

                popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
                    public boolean onMenuItemClick(MenuItem item) {


                        if (item.getItemId() == R.id.pendingInvites) {

                            startActivity(new Intent(MainActivity.this, PendingInvitesActivity.class));

                        } else if (item.getItemId() == R.id.feedback) {
                            final MaterialDialog dialog = new MaterialDialog.Builder(MainActivity.this)
                                    .title("Feedback")
                                    .customView(R.layout.feedback_dialog, true).build();

                            positiveAction = dialog.getActionButton(DialogAction.POSITIVE);

                            edtName = (EditText) dialog.getCustomView().findViewById(R.id.editName);
                            edtEmailId = (EditText) dialog.getCustomView().findViewById(R.id.editTextEmailId);
                            edtComment = (EditText) dialog.getCustomView().findViewById(R.id.editTextComment);
                            buttonSave = (Button) dialog.getCustomView().findViewById(R.id.buttonSave);

                            buttonSave.setOnClickListener(new View.OnClickListener() {
                                @Override
                                public void onClick(View view) {
                                    View view1 = getCurrentFocus();
                                    if (view1 != null) {
                                        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                                        imm.hideSoftInputFromWindow(view1.getWindowToken(), 0);
                                    }
                                    mName = String.valueOf(edtName.getText().toString());

                                    mEmailId = String.valueOf(edtEmailId.getText().toString());

                                    mComment = String.valueOf(edtComment.getText().toString());

                                    if (mComment.equals("")) {

                                        showAlert("Please enter comments.");

                                    } else if (mEmailId.equals("")) {

                                        showAlert("Please enter an email-id.");

                                    } else {

                                        if (!isValidEmail(mEmailId)) {

                                            showAlert("Please enter valid email id.");

                                        } else {

                                            HashMap<String, String> params = new HashMap<String, String>();

                                            params.put("name", mName);
                                            params.put("email_id", mEmailId);
                                            params.put("comment", mComment);

                                            CreateFeedbackAsyncTask createFeedbackAsyncTask = new CreateFeedbackAsyncTask(MainActivity.this, MainActivity.this);
                                            createFeedbackAsyncTask.execute(params);

                                            dialog.dismiss();

                                        }
                                    }

                                }
                            });

                            edtName.addTextChangedListener(new TextWatcher() {
                                @Override
                                public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                                }

                                @Override
                                public void onTextChanged(CharSequence s, int start, int before, int count) {
                                    positiveAction.setEnabled(s.toString().trim().length() > 0);


                                }

                                @Override
                                public void afterTextChanged(Editable s) {
                                    View view = getCurrentFocus();
                                    if (view != null) {
                                        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                                        imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
                                    }
                                }
                            });

                            edtComment.addTextChangedListener(new TextWatcher() {
                                @Override
                                public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                                }

                                @Override
                                public void onTextChanged(CharSequence s, int start, int before, int count) {
                                    positiveAction.setEnabled(s.toString().trim().length() > 0);
                                    View view = getCurrentFocus();
                                    if (view != null) {
                                        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                                        imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
                                    }

                                }

                                @Override
                                public void afterTextChanged(Editable s) {
                                }
                            });

                            edtEmailId.addTextChangedListener(new TextWatcher() {
                                @Override
                                public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                                }

                                @Override
                                public void onTextChanged(CharSequence s, int start, int before, int count) {
                                    positiveAction.setEnabled(s.toString().trim().length() > 0);
                                    View view = getCurrentFocus();
                                    if (view != null) {
                                        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                                        imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
                                    }

                                }

                                @Override
                                public void afterTextChanged(Editable s) {
                                }
                            });


                            dialog.show();
                            positiveAction.setEnabled(false);

                            return true;
                        }

                        return true;
                    }

                });

                popup.show();//showing popup menu
            }
        });


        if (toolbar != null) {
            toolbar.setTitle("");
            setSupportActionBar(toolbar);

        }

        if (toolbar != null) {

            toolbar.setNavigationIcon(R.drawable.ic_menu_white_24dp);
            toolbar.setNavigationOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    drawerLayout.openDrawer(GravityCompat.START);

                }
            });
        }
    }

    @Override
    public void doPostExecute(JSONArray response) throws JSONException {

        contactListArray = response;

        contactDb = new ContactTableHelper(MainActivity.this);

        if (null == contactList) {
            contactList = new ArrayList<Contact>();
        }

        for (int i = 0; i < contactListArray.length(); i++) {
            JSONObject subObject1 = contactListArray.getJSONObject(i);

            Contact contact = new Contact();
            JSONObject subObject = subObject1;
            String contactName = subObject.getString("user_name");
            //name of the attribute in response
            String pass = subObject.getString("password");
            String contactId = subObject.getString("user_id");
            String contactMobile = subObject.getString("mobile_no");
            String contactEmailId = subObject.getString("email_id");
            String contactProfile = subObject.getString("profile_image");
            String fullName = subObject.getString("full_name");
            String jobTitle = subObject.getString("job_title");
            String homeAddress = subObject.getString("home_address");
            String workPhone = subObject.getString("work_phone");
            String workAddress = subObject.getString("work_address");
            String company = subObject.getString("company");

            contact.setmThumbnail(contactProfile);
            contact.setmUserName(contactName);
            contact.setmMobileNo(contactMobile);
            contact.setmEmailId(contactEmailId);
            contact.setmProfileImage(contactProfile);
            contact.setContactId(contactId);
            contact.setmHomeAddress(homeAddress);
            contact.setmFullName(fullName);
            contact.setmJobTitle(jobTitle);
            contact.setmWorkAddress(workAddress);
            contact.setmWorkPhone(workPhone);
            contact.setmPass(pass);
            contact.setmCompany(company);

            contactList.add(contact);//adding string to arraylist

            contactDb.addContact(new Contact(contactId, contactName, pass, contactMobile, contactEmailId, contactProfile, fullName, jobTitle, workAddress, workPhone, homeAddress, company));

        }

        adapter = new ContactAdapter(MainActivity.this, contactList);
        recyclerView.setAdapter(adapter);
        recyclerView.setHasFixedSize(true);
        recyclerView.setItemViewCacheSize(20);
        recyclerView.setDrawingCacheEnabled(true);
        recyclerView.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH);
    }

    @Override
    public void onResume() {
        super.onResume();

        contactList.clear();

        if (!firstTimeLogin) {
            contactList.clear();
            contactList = contactDb.getAllContacts();
            mUser = mDb.getUser(mUserId);

            txtuserName.setText(mUser.getmUserName());
            txtmobile.setText(mUser.getmMobileNo());
        } else {
            new GetUserAsyncTask1(MainActivity.this,mUserId).execute(mUserId);
            new GetContactsAsyncTask(this, MainActivity.this, mUserId, MainActivity.this).execute();

            firstTimeLogin = false;

            SharedPreferences.Editor editor = getSharedPreferences("UserProfile", MODE_PRIVATE).edit();
            editor.putBoolean("login", firstTimeLogin);
            editor.commit();
        }

        recyclerView = (RecyclerView) findViewById(R.id.recycler_view);

        recyclerView.setHasFixedSize(true);
        RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(MainActivity.this);
        recyclerView.setLayoutManager(mLayoutManager);
        recyclerView.addItemDecoration(new DividerItemDecoration(this, LinearLayoutManager.VERTICAL));
        recyclerView.setItemAnimator(new DefaultItemAnimator());

        adapter = new ContactAdapter(MainActivity.this, contactList);
        recyclerView.setAdapter(adapter);

        recyclerView.addOnItemTouchListener(new RecyclerTouchListener(MainActivity.this, recyclerView, new ClickListener() {
            @Override
            public void onClick(View view, int position) {
                final Contact contact = contactList.get(position);

            }

            @Override
            public void onLongClick(View view, int position) {

            }
        }));

    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        switch (requestCode) {
            case REQUEST_ID_MULTIPLE_PERMISSIONS: {
                Map<String, Integer> perms = new HashMap<String, Integer>();

                perms.put(Manifest.permission.WRITE_EXTERNAL_STORAGE, PackageManager.PERMISSION_GRANTED);
                perms.put(Manifest.permission.CAMERA, PackageManager.PERMISSION_GRANTED);
                perms.put(Manifest.permission.READ_CONTACTS, PackageManager.PERMISSION_GRANTED);
                perms.put(Manifest.permission.SEND_SMS, PackageManager.PERMISSION_GRANTED);

                for (int i = 0; i < permissions.length; i++)
                    perms.put(permissions[i], grantResults[i]);

                if (perms.get(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED
                        && perms.get(Manifest.permission.READ_CONTACTS) == PackageManager.PERMISSION_GRANTED
                        && perms.get(Manifest.permission.SEND_SMS) == PackageManager.PERMISSION_GRANTED
                        && perms.get(Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {


                } else {

                    showAlert("Some Permissions are Denied.");
                }    
            }
            break;
            default:
                super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        }
    }

    @Override
    public void doPostExecute(JSONObject response, Boolean update) throws JSONException {


    }
}

主要布局:

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">

<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/container">
</FrameLayout>

<!-- Your normal content view -->
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:id = "@+id/toolbar_container">

    <!-- We use a Toolbar so that our drawer can be displayed
         in front of the action bar -->
    <android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/main_toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light">
        <RelativeLayout
            android:layout_width="fill_parent"
            android:layout_height="match_parent">
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/Contacts"
            android:layout_gravity="center"
            android:id="@+id/toolbar_title"
            android:textSize="20sp"
            android:textColor="#ffffff"
            android:textStyle="bold"
            android:textAlignment="center"
            android:gravity="center_vertical|center|center_horizontal"
            android:layout_toLeftOf="@+id/sync"
            android:layout_toStartOf="@+id/sync"
            android:layout_centerInParent="true"
            android:layout_marginLeft="30dp"
            android:layout_marginRight="10dp" />


        <ImageView
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:background="@drawable/ic_refresh_white_24dp"
            android:id="@+id/sync"
            android:layout_gravity = "right"
            android:layout_toStartOf="@+id/menu"
            android:layout_toLeftOf="@+id/menu"
            android:layout_centerVertical="true"
            android:layout_alignParentRight="false"
            android:layout_marginRight="10dp" />

        <ImageView
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:layout_gravity= "end"
            android:layout_marginRight="10dp"
            android:background="@drawable/ic_more_vert_white_36dp"
            android:id="@+id/menu"
            android:layout_alignParentEnd="true"
            android:layout_centerVertical="true"
            android:layout_alignParentRight="true" />
        </RelativeLayout>
    </android.support.v7.widget.Toolbar>

    <view
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#ffffff"
        class="android.support.v7.widget.RecyclerView"
        android:id="@+id/recycler_view"
        android:layout_alignParentStart="true"
        android:layout_alignParentLeft="true" />
    <!-- The rest of your content view -->

</LinearLayout>



<android.support.design.widget.NavigationView
    android:id="@+id/navigation_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:background="?attr/colorPrimary"
    app:headerLayout="@layout/drawer_header"
    app:itemTextColor="@color/yourColor"
    app:itemIconTint="@color/yourColor"
    app:menu="@menu/nav_menu" >
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <include
            layout="@layout/drawer_header"
            android:layout_width="match_parent"
            android:layout_height="103dp" />

        <ExpandableListView

            android:id="@+id/elvGuideNavigation"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:groupIndicator="@null"
            />

    </LinearLayout>

</android.support.design.widget.NavigationView>

Answer 1

在后台线程中进行 Json 解析并将条目添加到数据库中，并仅将条目的 ArrayList 传递到主线程，这样可以减少主线程上的负载。

您可以尝试的另一件事是将硬件加速设置为 true