blocks|key|749877|text|您需要使用onPreferenceTreeClick事件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|749878|例如，请参阅http://www.javased.com/index.php?source_dir=platform_packages_apps_phone/src/com/android/phone/MobileNetworkSettings.java|offset|length|749879|+@Override+
++++public+boolean+onPreferenceTreeClick(PreferenceScreen+preferenceScreen,+Preference+preference)+{+
++++++++/**+TODO:+Refactor+and+get+rid+of+the+if's+using+subclasses+*/+
++++++++if+(mGsmUmtsOptions+!=+null+&&+
++++++++++++++++mGsmUmtsOptions.preferenceTreeClick(preference)+==+true)+{+
++++++++++++return+true;+
++++++++}+else+if+(mCdmaOptions+!=+null+&&+
+++++++++++++++++++mCdmaOptions.preferenceTreeClick(preference)+==+true)+{+
++++++++++++if+(Boolean.parseBoolean(+
++++++++++++++++++++SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE)))+{+

++++++++++++++++mClickedPreference+=+preference;+

++++++++++++++++//+In+ECM+mode+launch+ECM+app+dialog+
++++++++++++++++startActivityForResult(+
++++++++++++++++++++new+Intent(TelephonyIntents.ACTION_SHOW_NOTICE_ECM_BLOCK_OTHERS,+null),+
++++++++++++++++++++REQUEST_CODE_EXIT_ECM);+
++++++++++++}+
++++++++++++return+true;+
++++++++}+else+if+(preference+==+mButtonPreferredNetworkMode)+{+
++++++++++++//displays+the+value+taken+from+the+Settings.System+
++++++++++++int+settingsNetworkMode+=+android.provider.Settings.Secure.getInt(mPhone.getContext().+
++++++++++++++++++++getContentResolver(),+android.provider.Settings.Secure.PREFERRED_NETWORK_MODE,+
++++++++++++++++++++preferredNetworkMode);+
++++++++++++mButtonPreferredNetworkMode.setValue(Integer.toString(settingsNetworkMode));+
++++++++++++return+true;+
++++++++}+else+if+(preference+==+mButtonDataRoam)+{+
++++++++++++if+(DBG)+log("onPreferenceTreeClick:+preference+==+mButtonDataRoam.");+

++++++++++++//normally+called+on+the+toggle+click+
++++++++++++if+(mButtonDataRoam.isChecked())+{+
++++++++++++++++//+First+confirm+with+a+warning+dialog+about+charges+
++++++++++++++++mOkClicked+=+false;+
++++++++++++++++new+AlertDialog.Builder(this).setMessage(+
++++++++++++++++++++++++getResources().getString(R.string.roaming_warning))+
++++++++++++++++++++++++.setTitle(android.R.string.dialog_alert_title)+
++++++++++++++++++++++++.setIconAttribute(android.R.attr.alertDialogIcon)+
++++++++++++++++++++++++.setPositiveButton(android.R.string.yes,+this)+
++++++++++++++++++++++++.setNegativeButton(android.R.string.no,+this)+
++++++++++++++++++++++++.show()+
++++++++++++++++++++++++.setOnDismissListener(this);+
++++++++++++}+else+{+
++++++++++++++++mPhone.setDataRoamingEnabled(false);+
++++++++++++}+
++++++++++++return+true;+
++++++++}+else+if+(preference+==+mButtonDataEnabled)+{+
++++++++++++if+(DBG)+log("onPreferenceTreeClick:+preference+==+mButtonDataEnabled.");+
++++++++++++ConnectivityManager+cm+=+
++++++++++++++++++++(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);+

++++++++++++cm.setMobileDataEnabled(mButtonDataEnabled.isChecked());+
++++++++++++return+true;+
++++++++}+else+if+(preference+==+mLteDataServicePref)+{+
++++++++++++String+tmpl+=+android.provider.Settings.Secure.getString(getContentResolver(),+
++++++++++++++++++++++++android.provider.Settings.Secure.SETUP_PREPAID_DATA_SERVICE_URL);+
++++++++++++if+(!TextUtils.isEmpty(tmpl))+{+
++++++++++++++++TelephonyManager+tm+=+(TelephonyManager)+getSystemService(+
++++++++++++++++++++++++Context.TELEPHONY_SERVICE);+
++++++++++++++++String+imsi+=+tm.getSubscriberId();+
++++++++++++++++if+(imsi+==+null)+{+
++++++++++++++++++++imsi+=+"";+
++++++++++++++++}+
++++++++++++++++final+String+url+=+TextUtils.isEmpty(tmpl)+?+null+
++++++++++++++++++++++++:+TextUtils.expandTemplate(tmpl,+imsi).toString();+
++++++++++++++++Intent+intent+=+new+Intent(Intent.ACTION_VIEW,+Uri.parse(url));+
++++++++++++++++startActivity(intent);+
++++++++++++}+else+{+
++++++++++++++++android.util.Log.e(LOG_TAG,+"Missing+SETUP_PREPAID_DATA_SERVICE_URL");+
++++++++++++}+
++++++++++++return+true;+
++++++++}+else+{+
++++++++++++//+if+the+button+is+anything+but+the+simple+toggle+preference,+
++++++++++++//+we'll+need+to+disable+all+preferences+to+reject+all+click+
++++++++++++//+events+until+the+sub-activity's+UI+comes+up.+
++++++++++++preferenceScreen.setEnabled(false);+
++++++++++++//+Let+the+intents+be+launched+by+the+Preference+manager+
++++++++++++return+false;+
++++++++}+
++++}+|code-block|syntax|javascript|749880|entityMap|0|LINK|mutability|MUTABLE|url|http://www.javased.com/index.php?source_dir=platform_packages_apps_phone/src/com/android/phone/MobileNetworkSettings.java^0|0|6|3D|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@$D|U|E|V|1|W]]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

You need to use onPreferenceTreeClick event.

For example see <a href="http://www.javased.com/index.php?source_dir=platform_packages_apps_phone/src/com/android/phone/MobileNetworkSettings.java" rel="nofollow noreferrer">http://www.javased.com/index.php?source_dir=platform_packages_apps_phone/src/com/android/phone/MobileNetworkSettings.java</a>

<pre><code> @Override 
 public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) { 
 /** TODO: Refactor and get rid of the if's using subclasses */ 
 if (mGsmUmtsOptions != null &amp;&amp; 
 mGsmUmtsOptions.preferenceTreeClick(preference) == true) { 
 return true; 
 } else if (mCdmaOptions != null &amp;&amp; 
 mCdmaOptions.preferenceTreeClick(preference) == true) { 
 if (Boolean.parseBoolean( 
 SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE))) { 

 mClickedPreference = preference; 

 // In ECM mode launch ECM app dialog 
 startActivityForResult( 
 new Intent(TelephonyIntents.ACTION_SHOW_NOTICE_ECM_BLOCK_OTHERS, null), 
 REQUEST_CODE_EXIT_ECM); 
 } 
 return true; 
 } else if (preference == mButtonPreferredNetworkMode) { 
 //displays the value taken from the Settings.System 
 int settingsNetworkMode = android.provider.Settings.Secure.getInt(mPhone.getContext(). 
 getContentResolver(), android.provider.Settings.Secure.PREFERRED_NETWORK_MODE, 
 preferredNetworkMode); 
 mButtonPreferredNetworkMode.setValue(Integer.toString(settingsNetworkMode)); 
 return true; 
 } else if (preference == mButtonDataRoam) { 
 if (DBG) log("onPreferenceTreeClick: preference == mButtonDataRoam."); 

 //normally called on the toggle click 
 if (mButtonDataRoam.isChecked()) { 
 // First confirm with a warning dialog about charges 
 mOkClicked = false; 
 new AlertDialog.Builder(this).setMessage( 
 getResources().getString(R.string.roaming_warning)) 
 .setTitle(android.R.string.dialog_alert_title) 
 .setIconAttribute(android.R.attr.alertDialogIcon) 
 .setPositiveButton(android.R.string.yes, this) 
 .setNegativeButton(android.R.string.no, this) 
 .show() 
 .setOnDismissListener(this); 
 } else { 
 mPhone.setDataRoamingEnabled(false); 
 } 
 return true; 
 } else if (preference == mButtonDataEnabled) { 
 if (DBG) log("onPreferenceTreeClick: preference == mButtonDataEnabled."); 
 ConnectivityManager cm = 
 (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE); 

 cm.setMobileDataEnabled(mButtonDataEnabled.isChecked()); 
 return true; 
 } else if (preference == mLteDataServicePref) { 
 String tmpl = android.provider.Settings.Secure.getString(getContentResolver(), 
 android.provider.Settings.Secure.SETUP_PREPAID_DATA_SERVICE_URL); 
 if (!TextUtils.isEmpty(tmpl)) { 
 TelephonyManager tm = (TelephonyManager) getSystemService( 
 Context.TELEPHONY_SERVICE); 
 String imsi = tm.getSubscriberId(); 
 if (imsi == null) { 
 imsi = ""; 
 } 
 final String url = TextUtils.isEmpty(tmpl) ? null 
 : TextUtils.expandTemplate(tmpl, imsi).toString(); 
 Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 
 startActivity(intent); 
 } else { 
 android.util.Log.e(LOG_TAG, "Missing SETUP_PREPAID_DATA_SERVICE_URL"); 
 } 
 return true; 
 } else { 
 // if the button is anything but the simple toggle preference, 
 // we'll need to disable all preferences to reject all click 
 // events until the sub-activity's UI comes up. 
 preferenceScreen.setEnabled(false); 
 // Let the intents be launched by the Preference manager 
 return false; 
 } 
 } 
</code></pre>

blocks|key|749930|text|您需要为项目设置android:key：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|749931|<Preference
++++android:key="myKey"
++++android:title="About"+/>|code-block|syntax|javascript|749932|然后，您可以在代码中执行以下操作：|749933|Preference+myPref+=+(Preference)+findPreference("myKey");
myPref.setOnPreferenceClickListener(new+OnPreferenceClickListener()+{
++++public+boolean+onPreferenceClick(Preference+preference)+{
++++++++//+open+browser+or+intent+here
++++++++return+true;
++++}
});|749934|entityMap^0|8|B|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

You need to set <code>android:key</code> for the item:
<pre class="lang-xml prettyprint-override"><code>&lt;Preference
 android:key=&quot;myKey&quot;
 android:title=&quot;About&quot; /&gt;
</code></pre>
Then you can do the following in your code:
<pre class="lang-java prettyprint-override"><code>Preference myPref = (Preference) findPreference(&quot;myKey&quot;);
myPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
 public boolean onPreferenceClick(Preference preference) {
 // open browser or intent here
 return true;
 }
});
</code></pre>

In my preferences.xml I have a preference element like this:

<pre><code>&lt;Preference android:title="About" /&gt;
</code></pre>

I want to assign <code>onClick</code> event, so if user would click on it, I would be able to do open new <code>Intent</code> or browser. I tried to do it like I do with buttons, but this not seem to work.

Android preferences onclick event

在我的preferences.xml中，我有一个偏好元素，如下所示：<Preference android:title="About" />我想分配onClick事件，所以如果用户会点击它，我将能够做打开新的Intent或浏览器。我试着像使用按钮一样去做，但这似乎不起作用。

问Android首选项onclick事件
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