ViewPager，PagerTitleStrip，FragmentPagerAdapter，FragmentStatePagerAdapterActionBarDrawerToggle（appcompat-v7中）可以監(jiān)聽(tīng)drawer的開(kāi)啟與關(guān)閉事件，也可以用代碼控制drawer的開(kāi)啟與關(guān)閉Providing Up Navigation
onOptionsItemSelected回調(diào)中處理up navigation： @Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
// Respond to the action bar's Up/Home button
case android.R.id.home:
Intent upIntent = NavUtils.getParentActivityIntent(this);
if (NavUtils.shouldUpRecreateTask(this, upIntent)) {
// This activity is NOT part of this app's task, so create a new task
// when navigating up, with a synthesized back stack.
TaskStackBuilder.create(this)
// Add all of this activity's parents to the back stack
.addNextIntentWithParentStack(upIntent)
// Navigate up to the closest parent
.startActivities();
} else {
// This activity is part of this app's task, so simply
// navigate up to the logical parent activity.
NavUtils.navigateUpTo(this, upIntent);
}
return true;
}
return super.onOptionsItemSelected(item);
}Providing Proper Back Navigation
但是以下情況需要特殊考慮
// Intent for the activity to open when user selects the notification
Intent detailsIntent = new Intent(this, DetailsActivity.class);
// Use TaskStackBuilder to build the back stack and get the PendingIntent
PendingIntent pendingIntent =
TaskStackBuilder.create(this)
// add all of DetailsActivity's parents to the stack,
// followed by DetailsActivity itself
.addNextIntentWithParentStack(upIntent)
.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
builder.setContentIntent(pendingIntent); // Works with either the framework FragmentManager or the
// support package FragmentManager (getSupportFragmentManager).
getSupportFragmentManager().beginTransaction()
.add(detailFragment, "detail")
// Add this transaction to the back stack
.addToBackStack()
.commit();需要注意的是，當(dāng)fragment是在ViewPager中水平切換時(shí)，不應(yīng)該把transaction 加入到 backstack中。
@Override
public void onBackPressed() {
if (mWebView.canGoBack()) {
mWebView.goBack();
return;
}
// Otherwise defer to system default behavior.
super.onBackPressed();
}Implementing Descendant Navigation
Intent加上startActivity(intent)，或者FragmentTransaction來(lái)完成向子界面的導(dǎo)航FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET flag Intent externalActivityIntent = new Intent(Intent.ACTION_PICK);
externalActivityIntent.setType("image/*");
externalActivityIntent.addFlags(
Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
startActivity(externalActivityIntent);Notifying the User
NotificationCompat.Builder創(chuàng)建通知欄消息stackBuilder.getPendingIntent創(chuàng)建PendingIntentPendingIntent.getActivity創(chuàng)建PendingIntent，同時(shí)在manifest中設(shè)置以下選項(xiàng)：
<activity
android:name=".ResultActivity"
...
android:launchMode="singleTask"
android:taskAffinity=""
android:excludeFromRecents="true">
</activity>完整示例：
Intent resultIntent = new Intent(this, ResultActivity.class);
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
// Adds the back stack
stackBuilder.addParentStack(ResultActivity.class);
// Adds the Intent to the top of the stack
stackBuilder.addNextIntent(resultIntent);
// Gets a PendingIntent containing the entire back stack
PendingIntent resultPendingIntent =
stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.notification_icon)
.setContentTitle("My notification")
.setContentText("Hello World!")
.setContentIntent(resultPendingIntent);
// Sets an ID for the notification
int mNotificationId = 001;
// Gets an instance of the NotificationManager service
NotificationManager mNotifyMgr =
(NotificationManager) getSystemService(NOTIFICATION_SERVICE);
// Builds the notification and issues it.
mNotifyMgr.notify(mNotificationId, mBuilder.build());Notification對(duì)象，調(diào)用mNotifyMgr.notify即可；setAutoCancel()會(huì)讓消息在用戶點(diǎn)擊時(shí)自動(dòng)消失；cancel(id)和cancelAll()可以代碼移除通知欄消息；Using Big View Styles
// Sets up the Snooze and Dismiss action buttons that will appear in the
// big view of the notification.
Intent dismissIntent = new Intent(this, PingService.class);
dismissIntent.setAction(CommonConstants.ACTION_DISMISS);
PendingIntent piDismiss = PendingIntent.getService(this, 0, dismissIntent, 0);
Intent snoozeIntent = new Intent(this, PingService.class);
snoozeIntent.setAction(CommonConstants.ACTION_SNOOZE);
PendingIntent piSnooze = PendingIntent.getService(this, 0, snoozeIntent, 0);
// Constructs the Builder object.
NotificationCompat.Builder builder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_stat_notification)
.setContentTitle(getString(R.string.notification))
.setContentText(getString(R.string.ping))
.setDefaults(Notification.DEFAULT_ALL) // requires VIBRATE permission
/*
* Sets the big view "big text" style and supplies the
* text (the user's reminder message) that will be displayed
* in the detail area of the expanded notification.
* These calls are ignored by the support library for
* pre-4.1 devices.
*/
.setStyle(new NotificationCompat.BigTextStyle()
.bigText(msg))
.addAction (R.drawable.ic_stat_dismiss,
getString(R.string.dismiss), piDismiss)
.addAction (R.drawable.ic_stat_snooze,
getString(R.string.snooze), piSnooze);setProgress (int max, int progress, boolean indeterminate)可以為通知欄消息設(shè)置進(jìn)度條，支持實(shí)時(shí)進(jìn)度、持續(xù)模式Supporting Swipe-to-Refresh
Adding Search Functionality
在App Bar中添加SearchView，注意它有support版本
res/menu/options_menu.xml：
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/search"
android:title="@string/search_title"
android:icon="@drawable/ic_search"
android:showAsAction="collapseActionView|ifRoom"
android:actionViewClass="android.widget.SearchView" />
</menu> @Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.options_menu, menu);
return true;
}創(chuàng)建可搜索的配置
res/xml/searchable.xml，配置SearchView的label，hint
<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/app_name"
android:hint="@string/search_hint" />manifest
<activity ... >
...
<meta-data android:name="android.app.searchable"
android:resource="@xml/searchable" />
</activity> @Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.options_menu, menu);
// Associate searchable configuration with the SearchView
SearchManager searchManager =
(SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView =
(SearchView) menu.findItem(R.id.search).getActionView();
searchView.setSearchableInfo(
searchManager.getSearchableInfo(getComponentName()));
return true;
}ACTION_SEARCH intent，需要在manifest文件中聲明響應(yīng)此intentMaking Your App Content Searchable by Google
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