Java 是什么导致我的片段与主要活动重叠？

为什么我的片段与主要活动重叠？我使用的滑动菜单包含一些片段。我的主要活动中有一些主要功能，但当我尝试单击菜单而不是替换主要活动布局时，它会出现在主要活动的顶部

问题:

主要活动：

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“碎片不是应该重叠在一起吗？”我认识的黑武士，只是有点慌乱。请检查我的问题，并给我一个解决方案，你可以。我在附加的图像中显示了一些内容，但是当单击任何菜单选项时，我的问题出现了。您的图像链接没有显示任何内容。等等！试试这是你的导航抽屉打开了吗？您的片段不应该重叠，因为您使用的是FragmentTransaction.replace。

package com.blueflair.incre;


import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.Configuration;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.provider.Settings;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.text.TextUtils;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.TranslateAnimation;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;

import org.apache.http.HttpException;


import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.net.ssl.HttpsURLConnection;



public class MainActivity extends AppCompatActivity implements   AdapterView.OnItemClickListener {

public static final String SERVER_ADDRESS = "http://192.168.0.1/serverfiles/userGPS.php";

DrawerLayout drawerLayout;
ListView drawerList;
ActionBarDrawerToggle drawerListener;
ActionBar actionBar;
Toolbar toolbar;
MyAdapter adapter;
LocalUserData userLocalStore;
float lastTranslate = 0.0f;
LocationManager lm;
Location location;
double longitude, latitude;
ProgressDialog progressDialog;
HashMap<String, String> postDataParams = new HashMap<>();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.mainactivity_layout);

    userLocalStore = new LocalUserData(this);

    toolbar = (Toolbar) findViewById(R.id.tool_bar);
    setSupportActionBar(toolbar);
    actionBar = getSupportActionBar();
    if(actionBar != null) {
        actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM | ActionBar.DISPLAY_SHOW_HOME | ActionBar.DISPLAY_HOME_AS_UP);
    }

    drawerList = (ListView) findViewById(R.id.drawerList);
    adapter = new MyAdapter(this);
    drawerList.setAdapter(adapter);
    drawerList.setOnItemClickListener(new SlideMenuClickListener());
    final FrameLayout frame = (FrameLayout) findViewById(R.id.mainContent);


    if(!isLocationEnabled(this)) {
        displayPromptForEnablingGPS(this);
    } else {
        //Get the user's location latitude and longitude
        lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
        location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        if(location!=null){
            latitude = location.getLatitude();
            longitude = location.getLongitude();
            userLocalStore.setUserLocation(longitude, latitude);
            new StoreUserLocationAsyncTask().execute();
        } else {
            Toast.makeText(this, "Problem in getting your location. Please try again later", Toast.LENGTH_SHORT).show();
        }


        lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 10, locationListener);
    }

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

    drawerListener = new ActionBarDrawerToggle(this, drawerLayout ,R.string.drawer_open, R.string.drawer_close) {
        @SuppressLint("NewApi")
        public void onDrawerSlide(View drawerView, float slideOffset) {
            float moveFactor = (drawerList.getWidth() * slideOffset);

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                frame.setTranslationX(moveFactor);
            }
            else {
                TranslateAnimation anim = new TranslateAnimation(lastTranslate, moveFactor, 0.0f, 0.0f);
                anim.setDuration(0);
                anim.setFillAfter(true);
                frame.startAnimation(anim);

                lastTranslate = moveFactor;
            }
        }
    };


    drawerLayout.setDrawerListener(drawerListener);
    drawerLayout.setScrimColor(getResources().getColor(android.R.color.transparent));
    drawerLayout.setDrawerShadow(R.drawable.vertical_menu_line_shadow_effect, GravityCompat.START);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menu_post, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    if(item.getItemId() == R.id.action_post){
        startActivity(new Intent(MainActivity.this, Post.class));
    }
    return drawerListener.onOptionsItemSelected(item);
}

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);
    }
}
private void displayView(int position) {
    // update the main content by replacing fragments
    Fragment fragment = null;
    Intent intent;

    switch (position) {
        case 0:
            fragment = new Profile_Fragment();
            break;
        case 1:
            fragment = new TrendingFragment();
            break;
        case 2:
            fragment = new Notification_Fragment();
            break;
        case 3:
            fragment = new Follow_Updates();
            break;
        case 4:
            fragment = new Favourites_Fragments();
            break;
        case 5:
            fragment = new Settings_Fragment();
            break;
        case 6:
            userLocalStore.clearUserData();
            userLocalStore.setUserLoggedIn(false);
            intent = new Intent(MainActivity.this, WelcomeActivity.class);
            startActivity(intent);
            break;
        default:
            break;
    }
    // update selected item and title, then close the drawer

    if (fragment != null) {
        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction transaction = fragmentManager.beginTransaction();
        transaction.replace(R.id.mainContent, fragment).commit();

            // update selected item and title, then close the drawer
        drawerList.setItemChecked(position, true);
        drawerList.setSelection(position);
        drawerLayout.closeDrawer(drawerList);

    } else {
        Log.e("HomeActivity", "Error in creating fragment");
    }
}


@Override
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    drawerListener.syncState();
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    drawerListener.onConfigurationChanged(newConfig);
}

private final LocationListener locationListener = new LocationListener() {
    public void onLocationChanged(Location location) {
        longitude = location.getLongitude();
        latitude = location.getLatitude();
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {

    }

    @Override
    public void onProviderEnabled(String provider) {

    }

    @Override
    public void onProviderDisabled(String provider) {

    }
};

@Override
protected void onStart() {
    super.onStart();
    if(authenticate()) {

    }
}

private boolean authenticate() {
    if (userLocalStore.getLoggedInUser() == null) {
        Intent intent = new Intent(this, WelcomeActivity.class);
        startActivity(intent);
        return false;
    }
    return true;
}

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

}

private void showErrorMessage() {
    AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(MainActivity.this);
    dialogBuilder.setMessage("Sorry! Something went wrong");
    dialogBuilder.setPositiveButton("Ok", null);
    dialogBuilder.show();
}


class MyAdapter extends BaseAdapter {
    private Context context;
    int[] menuIcons = { R.drawable.profile_icon_original, R.drawable.trending_original, R.drawable.notifications_icon_original, R.drawable.follow_icon_original ,R.drawable.favourites_icon_original,
            R.drawable.settings_icon_original, R.drawable.logout_icon_original
    };

    public MyAdapter(Context context) {
        this.context = context;
    }
    @Override
    public int getCount() {
        return menuIcons.length;
    }

    @Override
    public Object getItem(int position) {
        return menuIcons[position];
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View row;
        if(convertView==null) {
            LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            row = inflater.inflate(R.layout.custom_row, parent, false);
        }
        else {
            row = convertView;
        }
        ImageView imageView = (ImageView) row.findViewById(R.id.imageView2);
        imageView.setImageResource(menuIcons[position]);
        return row;
    }

}

public static boolean isLocationEnabled(Context context) {
    int locationMode = 0;
    String locationProviders;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT){
        try {
            locationMode = Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE);

        } catch (Settings.SettingNotFoundException e) {
            e.printStackTrace();
        }

        return locationMode != Settings.Secure.LOCATION_MODE_OFF;

    }else{
        locationProviders = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
        return !TextUtils.isEmpty(locationProviders);
    }


}
public static void displayPromptForEnablingGPS(final Activity activity) {

    final AlertDialog.Builder builder = new AlertDialog.Builder(activity);
    final String action = Settings.ACTION_LOCATION_SOURCE_SETTINGS;
    final String message = "Enable either GPS or any other location"
            + " service to find current location.  Click OK to go to"
            + " location services settings to let you do so.";

    builder.setMessage(message)
            .setPositiveButton("OK",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface d, int id) {
                            activity.startActivity(new Intent(action));
                            d.dismiss();
                        }
                    })
            .setNegativeButton("Cancel",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface d, int id) {
                            d.cancel();
                        }
                    });
    builder.create().show();
}

private void setProgressDialog(Context context) {
    progressDialog = new ProgressDialog(context);
    progressDialog.setCancelable(false);
    progressDialog.setTitle("Processing...");
    progressDialog.setMessage("Please wait...");
}

class StoreUserLocationAsyncTask extends AsyncTask<Void, Void, Void> {
    User user;

    @Override
    protected Void doInBackground(Void... params) {
        user = userLocalStore.getLoggedInUser();
        postDataParams.put("userID", Integer.toString(user.userID));
        postDataParams.put("longitude", String.valueOf(longitude));
        postDataParams.put("latitude", String.valueOf(latitude));

        performPostCall(SERVER_ADDRESS, postDataParams);
        return null;
    }


    @Override
    protected void onPostExecute(Void result) {
        super.onPostExecute(result);
    }

}
public String performPostCall(String requestURL, HashMap<String, String> postDataParams) {

    URL url;
    String response = "";
    try {
        url = new URL(requestURL);

        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setReadTimeout(15000);
        conn.setConnectTimeout(15000);
        conn.setRequestMethod("POST");
        conn.setDoInput(true);
        conn.setDoOutput(true);


        OutputStream os = conn.getOutputStream();
        BufferedWriter writer = new BufferedWriter(
                new OutputStreamWriter(os, "UTF-8"));
        writer.write(getPostDataString(postDataParams));

        writer.flush();
        writer.close();
        os.close();
        int responseCode=conn.getResponseCode();

        if (responseCode == HttpsURLConnection.HTTP_OK) {
            String line;
            BufferedReader br=new BufferedReader(new InputStreamReader(conn.getInputStream()));
            while ((line=br.readLine()) != null) {
                response+=line;
            }
        }
        else {
            response="";

            throw new HttpException(responseCode+"");
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    return response;
}
private String getPostDataString(Map<String, String> params) throws UnsupportedEncodingException {
    StringBuilder result = new StringBuilder();
    boolean first = true;
    for(Map.Entry<String, String> entry : params.entrySet()){
        if (first)
            first = false;
        else
            result.append("&");

        result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
        result.append("=");
        result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
    }

    return result.toString();
}

// @Override
//  public void onBackPressed() {
//    if (getFragmentManager().getBackStackEntryCount() == 0) {
///       this.finish();
///       super.onBackPressed();
 ///   } else {
  //      getFragmentManager().popBackStack();
  //  }
//  }

}