編輯:關於android開發
1 <!-- Wifi --> 2 <dashboard-tile 3 android:id="@+id/wifi_settings" 4 android:fragment="com.android.settings.wifi.WifiSettings" 5 android:icon="@drawable/sunmi_wifi" 6 android:title="@string/wifi_settings_title" /> 7 <!-- 移動網絡 --> 8 <dashboard-tile 9 android:id="@+id/mobile_net_settings" 10 android:icon="@drawable/sunmi_network" 11 android:title="@string/network_settings_title" > 12 <intent 13 android:action="android.intent.action.MAIN" 14 android:targetClass="com.android.phone.MobileNetworkSettings" 15 android:targetPackage="com.android.phone" /> 16 </dashboard-tile>
這是設置中的wifi,和移動網絡選項,一個是添加fragment ,另一個是添加intent
解析這個xml是在SettingActivity中的loadCategoriesFromResource(R.xml.dashboard_categories, categories);方法中,
1 private void rebuildUI(Context context) { 2 if (!isAdded()) { 3 return; 4 } 5 final Resources res = getResources(); 6 mDashboard.removeAllViews(); 7 List<DashboardCategory> categories = ((SettingsActivity) context).getDashboardCategories(true); 8 final int count = categories.size(); 9 for (int n = 0; n < count; n++) { 10 DashboardCategory category = categories.get(n); 11 View categoryView = mLayoutInflater.inflate(R.layout.dashboard_category, mDashboard, false); 12 TextView categoryLabel = (TextView) categoryView.findViewById(R.id.category_title); 13 categoryLabel.setText(category.getTitle(res)); 14 15 ViewGroup categoryContent = (ViewGroup) categoryView.findViewById(R.id.category_content); 16 17 final int tilesCount = category.getTilesCount(); 18 for (int i = 0; i < tilesCount; i++) { 19 DashboardTile tile = category.getTile(i); 20 DashboardTileView tileView = new DashboardTileView(context); 21 updateTileView(context, res, tile, tileView.getImageView(), tileView.getTitleTextView(), 22 tileView.getStatusTextView()); 23 24 tileView.setTile(tile); 25 categoryContent.addView(tileView); 26 } 27 28 // Add the category 29 mDashboard.addView(categoryView); 30 } 31 }
分析源碼可知rebuildui()是將xml中解析的實體類,構建成對應的view(categoryView,DashboardTileView)在這並沒有看到添加點擊事件,所以猜測應該寫到DashboardTileView中了
1 public class DashboardTileView extends FrameLayout implements View.OnClickListener
看到這裡就知道是在這裡實現點擊事件處理的
1 @Override 2 public void onClick(View v) { 3 if (mTile.fragment != null) { 4 Utils.startWithFragment(getContext(), mTile.fragment, mTile.fragmentArguments, null, 0, 5 mTile.titleRes, mTile.getTitle(getResources())); 6 } else if (mTile.intent != null) { 7 getContext().startActivity(mTile.intent); 8 } 9 }
看到這裡一目了然啦,可以知道fragment 優先級>intent
再來看fragment的跳轉
1 public static void startWithFragment(Context context, String fragmentName, Bundle args, 2 Fragment resultTo, int resultRequestCode, int titleResId, 3 CharSequence title) { 4 startWithFragment(context, fragmentName, args, resultTo, resultRequestCode, 5 null /* titleResPackageName */, titleResId, title, false /* not a shortcut */); 6 } 7 8 public static void startWithFragment(Context context, String fragmentName, Bundle args, 9 Fragment resultTo, int resultRequestCode, String titleResPackageName, int titleResId, 10 CharSequence title, boolean isShortcut) { 11 Intent intent = onBuildStartFragmentIntent(context, fragmentName, args, titleResPackageName, 12 titleResId, title, isShortcut); 13 if (resultTo == null) { 14 context.startActivity(intent); 15 } else { 16 resultTo.startActivityForResult(intent, resultRequestCode); 17 } 18 } 19 20 public static Intent onBuildStartFragmentIntent(Context context, String fragmentName, 21 Bundle args, String titleResPackageName, int titleResId, CharSequence title, 22 boolean isShortcut) { 23 Intent intent = new Intent(Intent.ACTION_MAIN); 24 intent.setClass(context, SubSettings.class); 25 intent.putExtra(SettingsActivity.EXTRA_SHOW_FRAGMENT, fragmentName); 26 intent.putExtra(SettingsActivity.EXTRA_SHOW_FRAGMENT_ARGUMENTS, args); 27 intent.putExtra(SettingsActivity.EXTRA_SHOW_FRAGMENT_TITLE_RES_PACKAGE_NAME, 28 titleResPackageName); 29 intent.putExtra(SettingsActivity.EXTRA_SHOW_FRAGMENT_TITLE_RESID, titleResId); 30 intent.putExtra(SettingsActivity.EXTRA_SHOW_FRAGMENT_TITLE, title); 31 intent.putExtra(SettingsActivity.EXTRA_SHOW_FRAGMENT_AS_SHORTCUT, isShortcut); 32 return intent; 33 }
可以知道是通過構建一個帶fragmentName參數的intent來啟動SubSettings.class
而SubSettings.class中並沒有實現具體添加fragment,在父類SettingsActivity中oncrreate()中獲取具體參數,添加對應fragment
點擊Setting 之dashboard 點擊跳轉流程就是這樣啦
轉自:http://blog.csdn.net/kingyc123456789/article/details/53175624
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