Android's useful code snippets are common code summaries

1: Check whether the memory card is inserted

String status=Environment.getExternalStorageState();

if(status.equals(Enviroment.MEDIA_MOUNTED))

{

    That there are SD Card into 

}

2: Make an Activity transparent

Layout ES11en. setTheme(R. style. Theme_Transparent) is not set in OnCreate.
Here is the definition of Theme_Transparent (note that transparent_bg is a transparent image)

3: Set the handle in the screen element

Use Activity.findViewById to get a handle on an element on the screen. Use this handle to set or get any exposed value for the object.

TextView msgTextView = (TextView)findViewById(R.id.msg);

   msgTextView.setText(R.string.push_me); 

4: Send text messages

 String body="this is mms demo";

           Intent mmsintent = new Intent(Intent.ACTION_SENDTO, Uri.fromParts("smsto", number, null));

           mmsintent.putExtra(Messaging.KEY_ACTION_SENDTO_MESSAGE_BODY, body);

           mmsintent.putExtra(Messaging.KEY_ACTION_SENDTO_COMPOSE_MODE, true);

           mmsintent.putExtra(Messaging.KEY_ACTION_SENDTO_EXIT_ON_SENT, true);

            startActivity(mmsintent);

5: Send MMS

    

StringBuilder sb = new StringBuilder();

            sb.append("file://");

            sb.append(fd.getAbsoluteFile());

            Intent intent = new Intent(Intent.ACTION_SENDTO, Uri.fromParts("mmsto", number, null));

            // Below extra datas are all optional.

            intent.putExtra(Messaging.KEY_ACTION_SENDTO_MESSAGE_SUBJECT, subject);

            intent.putExtra(Messaging.KEY_ACTION_SENDTO_MESSAGE_BODY, body);

            intent.putExtra(Messaging.KEY_ACTION_SENDTO_CONTENT_URI, sb.toString());

            intent.putExtra(Messaging.KEY_ACTION_SENDTO_COMPOSE_MODE, composeMode);

            intent.putExtra(Messaging.KEY_ACTION_SENDTO_EXIT_ON_SENT, exitOnSent);

            startActivity(intent)

6: Send Mail

mime = "img/jpg";

            shareIntent.setDataAndType(Uri.fromFile(fd), mime);

            shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(fd));

            shareIntent.putExtra(Intent.EXTRA_SUBJECT, subject);

            shareIntent.putExtra(Intent.EXTRA_TEXT, body);

7: Register 1 BroadcastReceiver

registerReceiver(mMasterResetReciever, new IntentFilter("oms.action.MASTERRESET"));

private BroadcastReceiver mMasterResetReciever = new BroadcastReceiver() {

        public void onReceive(Context context, Intent intent){

            String action = intent.getAction();

            if("oms.action.MASTERRESET".equals(action)){

                RecoverDefaultConfig();

            }

        }

    }

8: Define ContentObserver to listen to a table

private ContentObserver mDownloadsObserver = new DownloadsChangeObserver(Downloads.CONTENT_URI);

private class DownloadsChangeObserver extends ContentObserver {

        public DownloadsChangeObserver(Uri uri) {

            super(new Handler());

        }

        @Override

        public void onChange(boolean selfChange) { }   

        }

9: Get the UA

public String getUserAgent()

    {

           String user_agent = ProductProperties.get(ProductProperties.USER_AGENT_KEY, null);

            return user_agent;

    }

10: Empty your phone of Cookie

CookieSyncManager.createInstance(getApplicationContext());

        CookieManager.getInstance().removeAllCookie();11 : to establish a GPRS The connection 


 //Dial the GPRS link.

    private boolean openDataConnection() {

        // Set up data connection.

        DataConnection conn = DataConnection.getInstance();     

            if (connectMode == 0) {

                ret = conn.openConnection(mContext, "cmwap", "cmwap", "cmwap");

            } else {

                ret = conn.openConnection(mContext, "cmnet", "", "");

            }

    }

12: PreferenceActivity

public class Setting extends PreferenceActivity

 { 

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        addPreferencesFromResource(R.xml.settings) ; 

    }

 } 

Setting.xml:

            android:key="seting2 " 

            android:title="@string/seting2 " 

            android:summary="@string/seting2 " />

            android:key="seting1 " 

            android:title="@string/seting1 " 

            android:summaryOff="@string/seting1summaryOff"

            android:summaryOn="@stringseting1summaryOff"/>

13: Gets data from the specified server via HttpClient

TextView msgTextView = (TextView)findViewById(R.id.msg);

   msgTextView.setText(R.string.push_me); 

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