首頁底部菜單用BaseActivity實現及程式的退出功能實現

      前段時間為了弄項目的布局，為了底部菜單一直固定在底部，用了tabhost，接著隨著需求又用了activityGroup。activityGroup用得超不方便，沒事還是少用為妙！！！為了往後更方便，我決定更改主布局，一想到整個項目要重新弄布局，想死的心也有了~~~用了一天的時間，把底部菜單全部換了radioButton了。

重點來了！！！為了讓每個需要底部菜單的activity都能擁有底部菜單，我寫了個公有布局main.xml和公用的BaseActivity。同時，為了退出功能的實現，我寫了個AppManager類管理actiivty。

代碼如下：

main_footer.xml:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal" android:id="@+id/main_linearlayout_footer"android:layout_width="fill_parent" android:layout_height="wrap_content"android:gravity="center_vertical"android:background="@drawable/btm_bar_bg"android:layout_alignParentBottom="true">    <RadioGroup          android:id="@+id/radiogroup_personal_condition"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:orientation="horizontal" >             <RadioButton                 android:id="@+id/homeRadioButton"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_marginTop="2.0dip"                android:background="@drawable/radio_home"                android:button="@null"                 android:layout_marginLeft="20dp"                 android:layout_marginRight="30dp"                android:tag="1"                />                       <RadioButton                 android:id="@+id/priceRadioButton"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_marginTop="2.0dip"                android:background="@drawable/radio_price"                android:button="@null"                  android:layout_marginLeft="20dp"                 android:layout_marginRight="30dp"                   android:tag="2"                />                                    <RadioButton                 android:id="@+id/calRadioButton"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_marginTop="2.0dip"                android:background="@drawable/radio_cal"                android:button="@null"                  android:layout_marginLeft="20dp"                 android:layout_marginRight="30dp"                   android:tag="3"                />                            <RadioButton                 android:id="@+id/newsRadioButton"                 android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_marginTop="2.0dip"                android:background="@drawable/radio_news"                android:button="@null"                  android:layout_marginLeft="20dp"                 android:layout_marginRight="20dp"                   android:tag="4"                />             </RadioGroup></LinearLayout>

main.xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"   android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:background="#000000"    android:orientation="vertical"><LinearLayout    android:id="@+id/content"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:layout_above="@+id/bottom"    android:layout_alignParentTop="true"    >   </LinearLayout>   <include android:id="@+id/bottom" layout="@layout/main_footer"/></RelativeLayout>

BaseActivity:

/*** 繼承於Activity用於以後方便管理** @author coder**/public class BaseActivity extends Activity {//固定的功能表列radiobuttonprivate Button homeRadioButton;private Button priceRadioButton;private Button newsRadioButton;private Button calRadioButton;private LinearLayout ly_content;// 內容地區的布局private View contentView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.main);ly_content = (LinearLayout) findViewById(R.id.content);homeRadioButton = (Button) findViewById(R.id.homeRadioButton);priceRadioButton = (Button) findViewById(R.id.priceRadioButton);newsRadioButton = (Button) findViewById(R.id.newsRadioButton);calRadioButton = (Button) findViewById(R.id.calRadioButton);homeRadioButton.setOnClickListener(new OnClickListener(){public void onClick(View v) {Intent intent1 = new Intent(BaseActivity.this,HomeActivity.class);startActivity(intent1);}});priceRadioButton.setOnClickListener(new OnClickListener(){public void onClick(View v) {Intent intent2 = new Intent(BaseActivity.this,PriceActivity.class);startActivity(intent2);}});calRadioButton.setOnClickListener(new OnClickListener(){public void onClick(View v) {Intent intent3 = new Intent(BaseActivity.this,CalendarActivity.class);startActivity(intent3);}});newsRadioButton.setOnClickListener(new OnClickListener(){public void onClick(View v) {Intent intent4 = new Intent(BaseActivity.this,NewsActivity.class);startActivity(intent4);}});}/**** 設定內容地區** @param resId* 資源檔ID*/public void setContentLayout(int resId) {LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);contentView = inflater.inflate(resId, null);LayoutParams layoutParams = new LayoutParams();contentView.setLayoutParams(layoutParams);//contentView.setBackgroundDrawable(null);if (null != ly_content) {ly_content.addView(contentView);// 添加Activity到堆棧AppManager.getAppManager().addActivity(this);Log.v("AppManager", "AppManager 添加actiivty！！"+this.getLocalClassName());}}/**** 設定內容地區** @param view* View對象*/public void setContentLayout(View view) {if (null != ly_content) {ly_content.addView(view);}}/*** 得到內容的View** @return*/public View getLyContentView() {return contentView;}public BaseActivity() {}@Overridepublic boolean onCreateOptionsMenu(Menu menu) { /**            * 1. 如果不分組，就自訂為Menu.NONE 2. id:　這個很重要：onOptionsItemSelected(MenuItem            * item) 根據id來判斷那個菜單被選中 3. 定義菜單的排列 3. 設定Title            */ menu.add(Menu.NONE, 1, Menu.NONE, "退出");menu.add(Menu.NONE, 2, Menu.NONE, "取消");return super.onCreateOptionsMenu(menu);}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {if(item.getItemId() == 1){//finish();//System.exit(0);              //退出程式               AppManager.getAppManager().AppExit(BaseActivity.this);}else if(item.getItemId() == 2){}return super.onOptionsItemSelected(item);}public void onClick(View v) {}}

AppManager:

public class AppManager {public static Activity context = null;private static Stack<Activity> activityStack;private static AppManager instance;private AppManager(){}/** * 單一執行個體 */public static AppManager getAppManager(){if(instance==null){instance=new AppManager();}return instance;}/** * 添加Activity到堆棧 */public void addActivity(Activity activity){if(activityStack==null){activityStack=new Stack<Activity>();}activityStack.add(activity);}/** * 擷取當前Activity（堆棧中最後一個壓入的） */public Activity currentActivity(){Activity activity=activityStack.lastElement();return activity;}/** * 結束當前Activity（堆棧中最後一個壓入的） */public void finishActivity(){Activity activity=activityStack.lastElement();finishActivity(activity);}/** * 結束指定的Activity */public void finishActivity(Activity activity){if(activity!=null){activityStack.remove(activity);activity.finish();activity=null;}}/** * 結束指定類名的Activity */public void finishActivity(Class<?> cls){for (Activity activity : activityStack) {if(activity.getClass().equals(cls) ){finishActivity(activity);}}}/** * 結束所有Activity */public void finishAllActivity(){for (int i = 0, size = activityStack.size(); i < size; i++){            if (null != activityStack.get(i)){            activityStack.get(i).finish();            }    }activityStack.clear();}/** * 退出應用程式 */public void AppExit(Context context) {try {finishAllActivity();ActivityManager activityMgr= (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);activityMgr.restartPackage(context.getPackageName());System.exit(0);} catch (Exception e) {}}}

例如HomeActivity繼承baseActivity的關鍵代碼：@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        //setContentView(R.layout.home);     //調用baseactivity的方法
        setContentLayout(R.layout.home);}

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