android - 扩展另一个类并在我当前的 Activity 中膨胀它的 xml 隐藏了我当前 Activity 的内容

Question

我创建了一个导航 Activity ，其中有抽屉导航，现在当我在另一个 Activity 中扩展此类时，它可以正常工作，但其他 Activity 的内容没有显示

here is my code:
package com.astro.famouspandit.Activities.Abstract;

import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewStub;
import android.widget.FrameLayout;
import android.widget.LinearLayout;

import com.astro.famouspandit.Activities.Activity.ChartStyle;
import com.astro.famouspandit.Activities.Activity.Contact;
import com.astro.famouspandit.Activities.Activity.Settings;
import com.astro.famouspandit.R;

public  class NavigationActivity extends AppCompatActivity implements View.OnClickListener{

    protected DrawerLayout mDrawerLayout;

    protected FrameLayout mFrameLayout_ContentFrame;
    protected ActionBarDrawerToggle mActionBarDrawerToggle;
    protected Toolbar mToolbar;
    private LinearLayout mDrawerList2;

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

        mFrameLayout_ContentFrame = (FrameLayout) findViewById(R.id.main_activity_content_frame);
        mDrawerList2 = (LinearLayout) findViewById(R.id.left_drawer2);
        mToolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(mToolbar);


        mDrawerLayout = (DrawerLayout) findViewById(R.id.main_activity_DrawerLayout);
        mDrawerLayout.closeDrawers();
        mDrawerLayout.setStatusBarBackground(R.color.colorPrimary);

        mActionBarDrawerToggle = new ActionBarDrawerToggle
                (
                        this,
                        mDrawerLayout,
                        mToolbar,
                        R.string.drawer_open,
                        R.string.drawer_close
                ) {
            @Override
            public void onDrawerSlide(View drawerView, float slideOffset) {
                // Disables the burger/arrow animation by default
                super.onDrawerSlide(drawerView, 0);
            }
        };

        mDrawerLayout.setDrawerListener(mActionBarDrawerToggle);

        if (getSupportActionBar() != null) {
            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
            getSupportActionBar().setDisplayShowHomeEnabled(true);
            getSupportActionBar().setHomeButtonEnabled(true);
        }
        mActionBarDrawerToggle.syncState();

    }


    @Override
    public void onClick(View v) {

    }
    public boolean onPrepareOptionsMenu(Menu menu) {
        // If the nav drawer is open, hide action items related to the content view
        boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList2);
        menu.findItem(R.id.action_Aboutus).setVisible(!drawerOpen);
        return super.onPrepareOptionsMenu(menu);
    }
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu, menu);
        return true;


    }
    public boolean onOptionsItemSelected(MenuItem item){
        int items = item.getItemId();
        switch(items){

            case R.id.action_Settings:{
                Intent intent = new Intent(this,Settings.class);
                startActivity(intent);

            }break;

            case R.id.action_Contact_us:{
                Intent intent = new Intent(this,Contact.class);
                startActivity(intent);

            }break;

            case R.id.action_Aboutus:{
                Intent intent = new Intent(this,ChartStyle.class);
                startActivity(intent);

            }break;

            case R.id.action_Profile:{
                Intent intent = new Intent(this,ChartStyle.class);
                startActivity(intent);

            }break;
        }

        return super.onOptionsItemSelected(item);
    }


}

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/main_activity_DrawerLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">
    <LinearLayout android:id="@+id/left_drawer2"
        android:layout_width="280dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:orientation="vertical"
        android:choiceMode="singleChoice"
        android:divider="@android:color/transparent"
        android:dividerHeight="0dp"

        android:background="#0F6177"/>

    <!-- The main content view -->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <include layout="@layout/toolbar" />


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

    </LinearLayout>

    <!-- The navigation drawer -->


</android.support.v4.widget.DrawerLayout>

我扩展它的类:我看不到这个类的内容

public class Contact extends NavigationActivity implements View.OnClickListener {
    private EditText mName,mNumber,mEmail,mMessage;
    private FancyButton mSbmt;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getLayoutInflater().inflate(R.layout.activity_contact,mFrameLayout_ContentFrame);

Answer 1

我认为您正在搜索 BaseActivity 概念中使用的层次结构，您可以创建多个子对象并使用父对象的行为。正式概念是将布局从子 Activity 传递到 BaseActivity，BaseActivity 将设置内容。

首先创建一个抽象类，命名为BaseActivity，应该是这样的

public abstract class BaseActivity extends AppCompatActivity{
    @Override
    public void onCreate(bundle) {
        super.onCreate(bundle);
        setContentView(getLayoutResourceId());
    }

    protected abstract int getLayoutResourceId();
}

然后在你的情况下在 NavigationActivity 中扩展 BaseActivity 就像这里一样

   public class NavigationActivity extends BaseActivity {
    @Override
    public void onCreate(bundle) {
        super.onCreate(bundle);
        // do extra stuff on your resources, using findViewById on your activity_navigation
    }

    @Override
    protected int getLayoutResourceId() {
        return R.layout.activity_navigation;
    }
}