android

[Solved] How to find out programatically that file is already exist or not? [closed]

by

Creating SQLite Database – public class DatabaseHelper extends SQLiteOpenHelper { static final String dbName=”demoDB”; static final String employeeTable=”Employees”; static final String colID=”EmployeeID”; static final String colName=”EmployeeName”; static final String colAge=”Age”; static final String colDept=”Dept”; static final String deptTable=”Dept”; static final String colDeptID=”DeptID”; static final String colDeptName=”DeptName”; static final String viewEmps=”ViewEmps”; Creating the Database public void … Read more

[Solved] How to control pc from android phone? [closed]

by

One way is to control the pc desktop by a VNC app like androidVNC. With your android device connected to a network (as well as your PC), knowing your PC IP that should work. Another useful app is ftpcafe to navigate your PC files through your android device. 1 solved How to control pc from … Read more

[Solved] Queries too long(1-3 seconds), show a loading process icon [closed]

by

Use AsyncTask to do the processing in the background and communicate the information back to the UI on completion. Quoting the documentation, AsyncTask enables proper and easy use of the UI thread. This class allows to perform background operations and publish results on the UI thread without having to manipulate threads and/or handlers. There’s a … Read more

[Solved] How to stream songs (mp3 files) faster in android app

by

You can use Dynamic Adaptive Streaming over HTTP (DASH) or HTTP Live Streaming(HLS) for rich and smoother streaming. Google has an advanced library called exoplayer for this purpose. Try exoplayer for the purpose. The library and demo is available here The docs are available here The developer guide is available here 3 solved How to … Read more

[Solved] how to display a bitmap on imageview fetched from sqlite database in android

by

look at this code: you must load image bytes from cursor and convert it to Bitmap. byte[] imageBytes = getBlob(cursor, “ImageFieldName”, null); if (imageBytes != null) { Bitmap bmp= convertByteArrayToBitmap(imageBytes); imageview1.setImageBitmap(bmp); } private byte[] getBlob(Cursor cursor, String colName, byte[] defaultValue) { try { int colIndex; if (cursor != null && (colIndex = cursor.getColumnIndex(colName)) > -1 … Read more

[Solved] Whats wrong with my SQLite query?

by

As you can see in the query it tries to execute: CREATE TABLE new_info(user-name TEXT,user_mob TEXT,user_email TEXT); You have – instead of _. Just replace user-name with user_name. Check this post to understand how to be able to use hyphen in the table names. 4 solved Whats wrong with my SQLite query?

[Solved] control servo using android

by

Read the data as string using: string input = bluetooth.readString(); Then convert string to int using: int servopos = int(input); Then write the position to the servo:servo.write(servopos); Now depending on the data you send from android, you could need to : Trim it: input = input.trim(); Or constrain it : servopos = constrain(servopos,0,180); Your corrected … Read more

[Solved] I’m making weightSum but it can’t be sorted

by

add android:layout_gravity=”center_vertical” to both your ImageView and your Button, that will give you the alignment you depicted in your image. <LinearLayout android:layout_width=”match_parent” android:layout_height=”wrap_content” android:orientation=”horizontal” android:weightSum=”100″ > <ImageView android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:layout_gravity=”center_vertical” android:layout_weight=”80″ android:gravity=”right” android:src=”https://stackoverflow.com/questions/25706451/@drawable/image” /> <Button android:id=”@+id/blah” android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:layout_gravity=”center_vertical” android:layout_weight=”20″ android:gravity=”left” android:text=”Blah blah blah blah” android:textSize=”15sp” /> </LinearLayout> Also you didn’t set the height for … Read more