일단 먼저 읽어봐야할것들 Is your Android emulator just too slow? https://www.infinum.co/the-capsized-eight/articles/is-your-android-emulator-just-too-slow Why is the Android emulator so slow? http://stackoverflow.com/questions/1554099/why-is-the-android-emulator-so-slow 8 Tips to Speed Up Your Android ARM Emulator (AVD) http://delphi.org/2013/11/8-tips-to-speed-up-your-android-arm-emulator-avd/ 안드로이드 에뮬레이터가 느릴 때, Intel x64 Emulator Accelerator (HAXM)를 설치하기 Open Android SDK Manager and install Install “Extras” -> “intel x86 Emulator Accelerator (HAXM)” Execute <sdk>/extras/intel/Hardware_Accelerated_Execution_Manager/IntelHAXM.dmg. in the MAC….
Category: Android
Dynamic tab in android with dynamic tab content
Android How to check network status(Both Wifi and Mobile 3G)
Original Article: http://www.androidpeople.com/android-how-to-check-network-statusboth-wifi-and-mobile-3g/ import android.net.ConnectivityManager; import android.os.Bundle; import android.widget.Toast; public class pingtest extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); chkStatus(); } void chkStatus() { final ConnectivityManager connMgr = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE); final android.net.NetworkInfo wifi = connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI); final android.net.NetworkInfo mobile = connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); if( wifi.isAvailable() ){…
Different list items’ layouts
Original Article: http://android.amberfog.com/?p=296 public class MultipleItemsList extends ListActivity { private MyCustomAdapter mAdapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mAdapter = new MyCustomAdapter(); for (int i = 1; i < 50; i++) { mAdapter.addItem(“item ” + i); if (i % 4 == 0) { mAdapter.addSeparatorItem(“separator ” + i); } } setListAdapter(mAdapter); } private class…
Separating Lists with Headers in Android 0.9
Original Article: http://jsharkey.org/blog/2008/08/18/separating-lists-with-headers-in-android-09/ <!– list_header.xml –> <TextView xmlns:android=”http://schemas.android.com/apk/res/android” android:id=”@+id/list_header_title” android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:paddingTop=”2dip” android:paddingBottom=”2dip” android:paddingLeft=”5dip” style=”?android:attr/listSeparatorTextViewStyle” /> <!– list_item.xml –> <TextView xmlns:android=”http://schemas.android.com/apk/res/android” android:id=”@+id/list_item_title” android:layout_width=”fill_parent” android:layout_height=”fill_parent” android:paddingTop=”10dip” android:paddingBottom=”10dip” android:paddingLeft=”15dip” android:textAppearance=”?android:attr/textAppearanceLarge” /> <!– list_complex.xml –> <LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android” android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:orientation=”vertical” android:paddingTop=”10dip” android:paddingBottom=”10dip” android:paddingLeft=”15dip” > <TextView android:id=”@+id/list_complex_title” android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:textAppearance=”?android:attr/textAppearanceLarge” /> <TextView android:id=”@+id/list_complex_caption” android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:textAppearance=”?android:attr/textAppearanceSmall” /> </LinearLayout>…
Android Series: GET, POST and Multipart POST requests
Original Article: Android Series: GET, POST and Multipart POST requests try { HttpClient client = new DefaultHttpClient(); String getURL = “http://www.google.com”; HttpGet get = new HttpGet(getURL); HttpResponse responseGet = client.execute(get); HttpEntity resEntityGet = responseGet.getEntity(); if (resEntityGet != null) { //do something with the response Log.i(“GET RESPONSE”,EntityUtils.toString(resEntityGet)); } } catch (Exception e) { e.printStackTrace(); }…
Android: How to make current layout with scrollable text view?
Original Article: http://stackoverflow.com/questions/2621776/android-how-to-make-current-layout-with-scrollable-text-view ——————– |btn1| txt1 |btn2| ——————– | | | | | | | txtview1 | | | |…
‘Localhost’ in the android emulator
Original Article: http://www.droidnova.com/ever-tried-localhost-with-the-android-emulator,102.html Local Apache/Tomcat/whatever: 10.0.2.2
Android Application and AsyncTask basics
Original Article: http://www.screaming-penguin.com/node/7746 public class Main extends Activity { private static final String NAME = “NAME”; private EditText input; private Button saveButton; private Button deleteButton; private TextView output; private MyApplication application; @Override public void onCreate(final Bundle savedInstanceState) { Log.d(MyApplication.APP_NAME, “onCreate”); super.onCreate(savedInstanceSt<wbr>ate); this.setContentView(R.layout.m<wbr>ain); // get “Application” object for shared state or creating of expensive resources -…
Talking To Web Servers Via HTTP In Android 1.0
Original Article: http://brainflush.wordpress.com/2008/10/17/talking-to-web-servers-via-http-in-android-10/ HttpClient httpClient = new DefaultHttpClient(); StringBuilder uriBuilder = new StringBuilder(SERVICE_ENDPOINT); uriBuilder.append(“?param0=” + param0); uriBuilder.append(“¶m1=” + param1); uriBuilder.append(“¶mN=” + paramN); HttpGet request = new HttpGet(uriBuilder.toString()); HttpResponse response = httpClient.execute(request); int status = response.getStatusLine().getStatusCode(); // we assume that the response body contains the error message if (status != HttpStatus.SC_OK) { ByteArrayOutputStream ostream = new…
Https returns 404 with DefaultHttpClient on Android?
Reference: http://stackoverflow.com/questions/3730760/https-returns-404-with-defaulthttpclient-on-android I have an http request that worked as http://blah.com and now I have been asked to usehttps://blah.com The former works and the later fails with a Network I/O error. Are there any missing parameter settings that I need for the client? Answer Https almost always implies a different port being used (standard http=>80; standard https=>443)….
DroidDraw Beta
User Interface (UI) designer/editor for programming the Android Cell Phone Platform http://www.droiddraw.org/
How to fix java.net.UnknownHostException on Android
Original Article: http://jesper.storm-frandsen.dk/pages/How_to_fix_java.net.UnknownHostException_on_Android.php Start the emunator manually with the following command. The trick worked for me, when everything else did not work. C:\android\tools>emulator -avd Legend78 -dns-server 8.8.8.8 The IP address 8.8.8.8 is google-public-dns-a.google.com Or configure Eclipse in the Run or Debug configuration.
Support various screen-size in the Android UI – AndroidPub
Reference : [안드앱콘1] 다양한 스크린 사이즈에서의 UI 처리 http://www.androidpub.com/?mid=android_dev_info&category=127161& amp;page=4&document_srl=320322 Points – Handle resource by folder names res/layout/my_layout.xml: Normal screen-size layout res/layout-small/my_layout.xml: Small screen-size layout res/layout-large/my_layout.xml: Large screen-size layout res/drawable-ldpi/my_icon.png: Icons for low density res/drawable-mdpi/dpi/my_icon.png: Icons for medium density res/drawable-hdpi/my_icon.png: Icons for high density res/drawable-nodpi/composite.xml: Resources that unrelated with density – Do we need to generate…
Designing for Performance
Reference: http://developer.android.com/guide/practices/design/performance.html 성능을 위한 디자인 * 기본적으로 할수있다면 임시 객체를 생성하는것을 최대한 피하라. 생성된 객체가 적을 수록 UX(User Experience)에 직접적인 영향을 미치는 가비지 콜렉션(Garbage Collection)이 적게 실행된다. 1. 객체 생성을 피하라 – 입력 데이터에서 문자열을 추출할때, 복사본을 만드는 대신에, 원본 데이터 문자열의 부분만 리턴하여라. String 객체를 만들어야 하겠지만, 그 객체는 원본데이터와 char[]를 공유할 것이다. – 만약 문자열을 리턴하는…
Android Activity Life Cycle
Making the Android UI Fast and Efficient by Romain Guy
Th_0230_TurboChargeYourUI-HowtomakeyourAndroidUIfastandefficient.pdf Point! Adapters Better Code for efficient view redraw ——————————————————————– 1. Create simple class ——————————————————————– static class ViewHolder { TextView text; ImageView icon; } ——————————————————————– 2. getView() ——————————————————————– public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder; if(convertView == null) { convertView = mInflater.inflate(R.layout.list_item_icon_text, null); holder = new ViewHolder(); holder.text = (TextView) convertView.findViewById(R.id.text);…
Share Google Android API Key in Eclipse with other team members
Share Google Android API Key in Eclipse with other team members Basically, default debug keystore is stored in /Users/{NAME}/.android/debug_keystore 1. Set SVN Repository and Checkout to the computer, which contains the file “debug.keystore” 2. In Eclipse, File->Preference->Android->Build. 3. Set “Custom debug keystore” to “debug.keystore” file in SVN Checkout Directory Then, do not need to change…
Using the Android SDK on a Mac, Eclipse is really slow. How can I speed it up?
Original Article: http://stackoverflow.com/questions/2787055/using-the-android-sdk-on-a-mac-eclipse-is-really-slow-how-can-i-speed-it-up I’m using Eclipse + the Android SDK on a Mac running Snow Leopard to develop Android apps. Thing is, Eclipse is really slow – like, it “beach balls” for a few seconds when changing tabs. Is there anything I can do to improve it’s performance? The solution: change the Java version used…
error: “The connection to adb is down, and a severe error has occured”
Original Article: http://stackoverflow.com/questions/4072706/the-connection-to-adb-is-down-and-a-severe-error-has-occured error: “The connection to adb is down, and a severe error has occured” Try below steps: 1> Close the Eclipse if running 2> Go to the Android SDK tools directory in Command Prompt 3> type adb kill-server 4> then type adb start-server 5> No error message is thrown while starting ADB server, then…