clicklistener

问题 I'm studying Java and learning how to use mouse listener. However here is a very simple code which doesn't work. import acm.program.*; import java.awt.event.*; public class Test extends GraphicsProgram{ public void run() { isMouseClicked= false; addMouseListeners(); while (true) { if (isMouseClicked) { println ("OK"); break; } } } public void mouseClicked(MouseEvent e) { isMouseClicked= true; } private boolean isMouseClicked; } The idea is very simple. "isMouseClicked" is false at the

问题 I had my onItemClickListener working for my ListView inside of my DrawerLayout working fine. But I added a ProgressBar that is displayed before anything else then it is set to View.GONE. However, I can't select and items from my list view any more. list_item.xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"

问题 I had my onItemClickListener working for my ListView inside of my DrawerLayout working fine. But I added a ProgressBar that is displayed before anything else then it is set to View.GONE. However, I can't select and items from my list view any more. list_item.xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"

问题 What im trying to accomplish is something that is standard in most twitter apps, in a textview there may be an "@" mention or a "#" hashtag preceding a word in a text string and they are actually able to add a click listener onto that word that launches another activity, does anyone know how this is achieved? below I have attached an example photo showing what i'm trying to achieve, any help would go a long way thanks 回答1: Take a look at the Linkify class. It allows you to add Links within

问题 What im trying to accomplish is something that is standard in most twitter apps, in a textview there may be an "@" mention or a "#" hashtag preceding a word in a text string and they are actually able to add a click listener onto that word that launches another activity, does anyone know how this is achieved? below I have attached an example photo showing what i'm trying to achieve, any help would go a long way thanks 回答1: Take a look at the Linkify class. It allows you to add Links within

问题 <nl.vogelbescherming.wadvogels.util.HackyScrollView android:id="@+id/scroll" android:layout_width="match_parent" android:layout_height="match_parent" android:fillViewport="true" android:scrollbarStyle="outsideOverlay" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" > <nl.vogelbescherming.wadvogels.util.HackyViewPager android:id="@+id/profiles" android:layout_width="match_parent" android:layout_height="match_parent"

问题 I'm making an android application, where there is a view composed of hundreds of buttons, each with a specific callback. Now, I'd like to set these callbacks using a loop, instead of having to write hundreds of lines of code (for each one of the buttons). My question is: How can I use findViewById without statically having to type in each button id? Here is what I would like to do: for(int i=0; i<some_value; i++) { for(int j=0; j<some_other_value; j++) { String buttonID = "btn" + i + "-" + j;

问题 i use the following code to listener my listview onItemClick Events. no compile error occurred , and nothing happened when i clicked any list item , i don't why Orz could someone tell me why @@? mp3_listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2 , long arg3) { Toast.makeText(tabDigTest.this , arg2+" ", Toast.LENGTH_SHORT); } }); 回答1: You need to call show on the Toast object then only it'll be shown. Toast

问题 I have NavigationView in my DrawerLayout and let's say it has simple menu <menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/nav_settings" android:icon="@drawable/ic_settings_black_24dp" android:title="@string/title_settings"/> </menu> Now I set listener for click: mNavigationVeiw.setOnNavigationItemSelected(this); @Override public boolean onNavigationItemSelected(@NonNull MenuItem item) { switch (item.getItemId()) { case R.id.nav_settings:

问题 This is my onCreate function. Since there is lot of code inside onclickListener for Hello i want to shift it outside to a method. how can i do that ? public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); facebook.authorize(this, permissions, Facebook.FORCE_DIALOG_AUTH, new DialogListener() { public void onComplete(Bundle values) { } public void onFacebookError(FacebookError error) { } public void onError(DialogError e) { } public