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>    <!-- 为下个布局分配空间 -->    <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    }