Activity继承BaseActivity的使用（有相同不状态栏时很适用）

首先在BaseActivity中写好其他Activity要继承的状态栏的布局：
布局文件activity_base.xml代码如下：

<LinearLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.chuangzhi.chuangzhi360.activity.BaseActivity">
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="50px"
        android:background="@drawable/top_bg">
        <ImageView
            android:id="@+id/logo"
            android:layout_width="40px"
            android:layout_height="40px"
            android:layout_centerVertical="true"
            android:layout_marginLeft="20px"
            android:src="@drawable/yimei_logo"/>
        <TextView
            android:id="@+id/company_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_toRightOf="@+id/logo"
            android:layout_marginLeft="20px"
            android:text="@string/ymys"
            android:textSize="16px"
            android:textColor="@color/white"/>
        <TextView
            android:id="@+id/date"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_alignParentRight="true"
            android:layout_marginRight="20px"
            android:textSize="16px"
            android:textColor="@color/white"/>
        <ImageView
            android:id="@+id/is_connect"
            android:layout_width="22px"
            android:layout_height="22px"
            android:src="@drawable/connect"
            android:layout_toLeftOf="@+id/date"
            android:layout_centerVertical="true"
            android:layout_marginRight="10px"/>
    RelativeLayout>
    
    <RelativeLayout
        android:id="@+id/all_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#000000">
    RelativeLayout>
LinearLayout>

接下来BaseActivity.java的代码：

public class BaseActivity extends AppCompatActivity {

    TextView shopName;
    TextView date;
    /**
     * 判断当前界面的那个界面
     */
    ImageView isConnect;
    private RelativeLayout allContent;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        hideStatusBar();   //影响状态栏
        setContentView(R.layout.activity_base);
    }

    //  初始化
    public void baseInit(){
        date = (TextView) findViewById(R.id.date);
        isConnect = (ImageView) findViewById(R.id.is_connect);

        showDate();
        showNetwork();
    }

    //  设置要显示的布局方法
    public void BaseSetContentView(int layoutID){
        allContent = (RelativeLayout)findViewById(R.id.all_content);
        LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
//      把继承该BaseActivity的layoutID放进来 显示
        View view = inflater.inflate(layoutID, null);
        allContent.addView(view);
    }

    private void hideStatusBar() {
        // TODO TODO TODO TODO Auto-generated method stub
        // 隐藏标题
        requestWindowFeature(Window. FEATURE_NO_TITLE );
        // 定义全屏参数
        int flag = WindowManager.LayoutParams. FLAG_FULLSCREEN ;
        // 获得窗口对象
        Window myWindow = this.getWindow();
        // 设置 Flag 标识
        myWindow.setFlags(flag,flag);
    }

    /**
     * 显示网络状态
     */
    private void showNetwork() {
        ConnectivityManager mConnectivityManager = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
        if (mNetworkInfo != null) {   //网络可用
            isConnect.setBackgroundResource(R.drawable.connect);
        }else {
            isConnect.setBackgroundResource(R.drawable.un_connect);
        }
    }

    private void showDate() {
        final Handler mHandler = new Handler(){
            @Override
            public void handleMessage(Message msg) {
                if(msg.arg1==1){
                    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm");
                    String dateStr = format.format(new Date());
                    date.setText(dateStr);
                }
            }
        };
        //定义一个计时器,设置为延迟0ms后执行，每隔1min执行一次（这里如果设置为 timer.schedule(task,1000)表示执行一次）
        new Timer().schedule(new TimerTask(){
            @Override
            public void run() {
                Message message = new Message();
                message.arg1 = 1;
                mHandler.sendMessage(message);
            }
        }, 0, 1000);
    }

}

接下来就是要继承BaseActivity的类，这里就举一个例好了：

public class MainActivity extends BaseActivity implements View.OnClickListener {

    public ImageView[] tabImages;
    public TextView[] tabTexts;
    public LinearLayout[] tabLayouts;
    public static Fragment currentFragment;
    public static FragmentManager manager;
    private RelativeLayout infoLayout;
    private ImageView contactBook;
    private ImageView setting;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//      调用父类方法显示view
        BaseSetContentView(R.layout.activity_main);
        initView();
    }

    private void initView() {
        baseInit();
        //后面就是你的Activity里其他控件的初始化
    }