Android

This post is a simple drawing example using Canvas, BitMap, Paint and Path classes from Android. Code: MainActivity.java import java.util.ArrayList; import android.app.Activity; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Path; import android.os.Bundle; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup.LayoutParams; import android.widget.LinearLayout; public class DrwaingActivity extends Activity { View mView; private Paint mPaint; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); LinearLayout layout = (LinearLayout) findViewById(R.id.myDrawing); mView = new DrawingView(this); layout.addView(mView, new LayoutParams( LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT...

Consider using simple NavigationView instead of this old sliding menu , which based on Material design and much simpler and very flexible than this Navigation drawer. This post will help you to create a simple sliding menu in Android. Here sliding menu is a listview which is in INVISIBLE state. It will comes to VISIBLE state once you click the menu button. And it will go to INVISIBLE state again once you pick the item from listview. To change the state we are using animation, that is why it looks like sliding. Complete code: MainActivity.java package com.android.slidingmenuexample; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Butt...

We know, We can send an e-mail using Intents, This will invoke either default mail app or built-in device mail apps to send an e-mail. This is unnecessary for user to work on e-mail application while he is trying to work an our application. So the question is how to send an e-mail from android application without user interaction? Answer is you can achieve this using JavaMail API . You have to use following three jars. mail.jar activation.jar additionnal.jar Complete code: MainActivity.java package com.exmple.javamail; import android.app.Activity; import android.app.ProgressDialog; import android.os.AsyncTask; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; import java.io.UnsupportedEncodingException; import java.util.Properties; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.PasswordAuthentication; import javax.mail.Session; import javax.mail....

You can extract zip file by using ZipInputStream class in android. MainActivity.java package com.android.zipextracter; import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.zip.ZipEntry; import java.util.zip.ZipInputStream; import android.os.Bundle; import android.os.Environment; import android.widget.Toast; import android.app.Activity; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); String zipFilePath = Environment.getExternalStorageDirectory() .getAbsolutePath()+"/"; unpackZip(zipFilePath, "MyRar.zip"); } private boolean unpackZip(String path, String zipname) { InputStream is; ZipInputStream zis; try { String filename; is = new FileInputStream(path + zipn...

By this example you can access your DialogFragment throughout the application. You can send arguments to DialogFragment, and also you can retrieve values from DialogFragment. Screenshot: Code: MyCustomDialog.java package com.andoid.dialogfragment; import android.app.Dialog; import android.app.DialogFragment; import android.graphics.Color; import android.graphics.drawable.ColorDrawable; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.view.WindowManager; import android.widget.Button; import android.widget.EditText; public class MyCustomDialog extends DialogFragment { Button mButton; EditText mEditText; onSubmitListener mListener; String text = ""; interface onSubmitListener { void setOnSubmitListener(String arg); } @Override public Dialog onCreateDialog(Bundle savedInstanceState) { final Dialog dialog = new Dialog(getActivity()); dialog.getWindow().requestFeature(Wi...

Now possible to hear the spoken of words by Android. Screenshot: Code: TextToSpeechActivity.java package com.android.texttospeach; import android.app.Activity; import android.os.Bundle; import android.speech.tts.TextToSpeech; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.EditText; import java.util.Locale; public class TextToSpeechActivity extends Activity implements TextToSpeech.OnInitListener { private static final String TAG = "MyTextToSpeechDemo"; private TextToSpeech mTts; private Button mPlayButton; EditText mEditText; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.text_to_speech); // Initialize text-to-speech. This is an asynchronous operation. mTts = new TextToSpeech(this, this); mPlayButton = (Button) findViewById(R.id.button1); mEditText = (EditText) findViewById(R.id.editText1); mPlayButton.setOnClickL...

Video Output: Source code link is added below. Here we have a class called MultiSelectionSpinner . In this class we have following methods. public void setItems(String[] items) Used to set adapter items using array of strings to this spinner. public void setItems(List items) Used to set adapter items using list of strings to this spinner. public void setSelection(String[] selection) Used to set selected items on this adapter using array of strings to this spinner. public void setSelection(List selection) Used to set selected items on this adapter using list of strings to this spinner. public void setSelection(int index) Used to set single selected item using position to this spinner. public void setSelection(int[] selectedIndices) Used to set selected items using array of integers to this spinner. public List getSelectedStrings() Used to get the selected items as a string public List getSelectedIndices() Used to get the se...