Crop Image

In this tutorial i will show you how to crop an image in your android apps. I just refer this tutorial from this site. Just see the code below.


First thing you need to do is to create an Android Project. Second is create a two layouts named crop_selector.xml and main.xml.

crop_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:gravity="center_vertical">

<ImageView
android:id="@+id/iv_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>

<TextView
android:id="@+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""/>

</LinearLayout>

main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    
<TextView  
   android:layout_width="fill_parent" 
   android:layout_height="wrap_content"
   android:layout_marginTop="10dp"
   android:layout_marginBottom="10dp"
   android:gravity="center"
   android:textStyle="bold"
   android:textSize="17sp"
   android:text="How to select and crop image"/>
   
<Button 
android:id="@+id/btn_crop"
android:layout_width="match_parent"  
android:layout_height="wrap_content"
android:text="Select image" />

<ImageView
android:id="@+id/iv_photo"
android:layout_marginTop="10dp"
android:layout_gravity="center_horizontal"
android:layout_width="fill_parent"  
android:layout_height="200dp"/>


</LinearLayout>

After you create the two layouts, you need to create 3 classes namely MainActivity.java, CropOption.java,  and CropOptionAdapter.

MainActivity.java

package net.londatiga.android;

import java.io.File;

import java.util.ArrayList;

import java.util.List;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.ActivityNotFoundException;

import android.content.ComponentName;

import android.content.DialogInterface;

import android.content.Intent;

import android.content.pm.ResolveInfo;

import android.graphics.Bitmap;

import android.provider.MediaStore;

import android.view.View;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.widget.Button;

import android.widget.ArrayAdapter;

import android.widget.Toast;

import android.widget.ImageView;

public class MainActivity extends Activity {

private Uri mImageCaptureUri;

private ImageView mImageView;

private static final int PICK_FROM_CAMERA = 1;

private static final int CROP_FROM_CAMERA = 2;

private static final int PICK_FROM_FILE = 3;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        

        setContentView(R.layout.main);

        

        final String [] items = new String [] {"Take from camera", "Select from gallery"};

ArrayAdapter<String> adapter = new ArrayAdapter<String> (this, android.R.layout.select_dialog_item,items);

AlertDialog.Builder builder = new AlertDialog.Builder(this);

builder.setTitle("Select Image");

builder.setAdapter( adapter, new DialogInterface.OnClickListener() {

public void onClick( DialogInterface dialog, int item ) { //pick from camera

if (item == 0) {

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

mImageCaptureUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),

  "tmp_avatar_" + String.valueOf(System.currentTimeMillis()) + ".jpg"));

intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mImageCaptureUri);

try {

intent.putExtra("return-data", true);

startActivityForResult(intent, PICK_FROM_CAMERA);

} catch (ActivityNotFoundException e) {

e.printStackTrace();

}

} else { //pick from file

Intent intent = new Intent();

               intent.setType("image/*");

               intent.setAction(Intent.ACTION_GET_CONTENT);

               

               startActivityForResult(Intent.createChooser(intent, "Complete action using"), PICK_FROM_FILE);

}

}

} );

final AlertDialog dialog = builder.create();

Button button = (Button) findViewById(R.id.btn_crop);

mImageView = (ImageView) findViewById(R.id.iv_photo);

button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

dialog.show();

}

});

    }

    

    @Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

   if (resultCode != RESULT_OK) return;

  

   switch (requestCode) {

   case PICK_FROM_CAMERA:

    doCrop();

   

    break;

   

   case PICK_FROM_FILE: 

    mImageCaptureUri = data.getData();

   

    doCrop();

   

    break;    

   

   case CROP_FROM_CAMERA:    

       Bundle extras = data.getExtras();

       if (extras != null) {        

           Bitmap photo = extras.getParcelable("data");

           

           mImageView.setImageBitmap(photo);

       }

       File f = new File(mImageCaptureUri.getPath());            

       

       if (f.exists()) f.delete();

       break;

   }

}

    

    private void doCrop() {

final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>();

   

    Intent intent = new Intent("com.android.camera.action.CROP");

        intent.setType("image/*");

        

        List<ResolveInfo> list = getPackageManager().queryIntentActivities( intent, 0 );

        

        int size = list.size();

        

        if (size == 0) {        

        Toast.makeText(this, "Can not find image crop app", Toast.LENGTH_SHORT).show();

       

            return;

        } else {

        intent.setData(mImageCaptureUri);

            

            intent.putExtra("outputX", 200);

            intent.putExtra("outputY", 200);

            intent.putExtra("aspectX", 1);

            intent.putExtra("aspectY", 1);

            intent.putExtra("scale", true);

            intent.putExtra("return-data", true);

            

        if (size == 1) {

        Intent i = new Intent(intent);

        ResolveInfo res = list.get(0);

       

        i.setComponent( new ComponentName(res.activityInfo.packageName, res.activityInfo.name));

       

        startActivityForResult(i, CROP_FROM_CAMERA);

        } else {

       for (ResolveInfo res : list) {

        final CropOption co = new CropOption();

       

        co.title = getPackageManager().getApplicationLabel(res.activityInfo.applicationInfo);

        co.icon = getPackageManager().getApplicationIcon(res.activityInfo.applicationInfo);

        co.appIntent= new Intent(intent);

       

        co.appIntent.setComponent( new ComponentName(res.activityInfo.packageName, res.activityInfo.name));

       

           cropOptions.add(co);

       }

       

       CropOptionAdapter adapter = new CropOptionAdapter(getApplicationContext(), cropOptions);

       

       AlertDialog.Builder builder = new AlertDialog.Builder(this);

       builder.setTitle("Choose Crop App");

       builder.setAdapter( adapter, new DialogInterface.OnClickListener() {

           public void onClick( DialogInterface dialog, int item ) {

               startActivityForResult( cropOptions.get(item).appIntent, CROP_FROM_CAMERA);

           }

       });

       

       builder.setOnCancelListener( new DialogInterface.OnCancelListener() {

           @Override

           public void onCancel( DialogInterface dialog ) {

              

               if (mImageCaptureUri != null ) {

                   getContentResolver().delete(mImageCaptureUri, null, null );

                   mImageCaptureUri = null;

               }

           }

       } );

       

       AlertDialog alert = builder.create();

       

       alert.show();

        }

        }

}

}

CropOption.java

package net.londatiga.android;

import android.content.Intent;

import android.graphics.drawable.Drawable;

public class CropOption {

public CharSequence title;

public Drawable icon;

public Intent appIntent;

}

CropOptionAdapter

package net.londatiga.android;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.ImageView;

import android.widget.TextView;

import android.content.Context;

import java.util.ArrayList;

/**

 * Adapter for crop option list.

 * 

 * @author Lorensius W. L. T <lorenz@londatiga.net>

 *

 */

public class CropOptionAdapter extends ArrayAdapter<CropOption> {

private ArrayList<CropOption> mOptions;

private LayoutInflater mInflater;

public CropOptionAdapter(Context context, ArrayList<CropOption> options) {

super(context, R.layout.crop_selector, options);

mOptions = options;

mInflater = LayoutInflater.from(context);

}

@Override

public View getView(int position, View convertView, ViewGroup group) {

if (convertView == null)

convertView = mInflater.inflate(R.layout.crop_selector, null);

CropOption item = mOptions.get(position);

if (item != null) {

((ImageView) convertView.findViewById(R.id.iv_icon)).setImageDrawable(item.icon);

((TextView) convertView.findViewById(R.id.tv_name)).setText(item.title);

return convertView;

}

return null;

}

}

That's it. Anyway there's a lot of tutorial around like this crop image and croping. Sorry if I didn't show the output because I can't upload the output image... Hope this simple tutorial may help you...

Change dot to Asterisk in Password

In this tutorial, I will show you how to change the default value for password which is dot(.) to asterisk(*). See the code below.

//create a child class of your main class
class AsteriskPasswordTransformationMethod extends PasswordTransformationMethod {
    @Override
    public CharSequence getTransformation(CharSequence source, View view) {
        return new PasswordCharSequence(source);
    }

    private class PasswordCharSequence implements CharSequence {
        private CharSequence mSource;
        public PasswordCharSequence(CharSequence source) {
            mSource = source; // Store char sequence
        }
        public char charAt(int index) {
            return '*'; // This is the important part
        }
        public int length() {
            return mSource.length(); // Return default
        }
        public CharSequence subSequence(int start, int end) {
            return mSource.subSequence(start, end); // Return default
        }
    }
};


//then call this class wherever you need to change the dot to asterisk.
final EditText et_pin1 = (EditText)dl.findViewById(R.id.et_verify1);et_pin1.setTransformationMethod(new AsteriskPasswordTransformationMethod());


That's it, hope this simple tutorial will help you something. Happy Coding

Customized dialog within the Activity

In this post, I will show you how to create a customized dialog in Android. I can't show you the output because I can't upload image at this time. I will just show you some codes.

//declare a dl variable for dialog at the top
private Dialog dl;


//user this code whereever you need it.
dl = new Dialog(Send_Money.this);
dl.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
dl.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
dl.setContentView(getLayoutInflater().inflate(R.layout.send_money_option_dialog, null));
dl.getWindow().getAttributes().windowAnimations = R.style.dialog_animation;

TextView tv_msg = (TextView)dl.findViewById(R.id.tv_message);
TextView tv_title = (TextView)dl.findViewById(R.id.tv_dialog_title);


tv_title.setText("TITLE");
tv_msg.setText("Message");

Button btn_one = (Button) dl.findViewById(R.id.btn_dialog_btn_one);
Button btn_two = (Button) dl.findViewById(R.id.btn_dialog_btn_two );
Button btn_three = (Button) dl.findViewById(R.id.btn_dialog_btn_three);

btn_one .setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {

//do some code for button one

}
});


btn_two .setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {

//do some code for button two

}
});

btn_three .setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {

//do some code for button three

}
});

dl.show();
}



That's it, hope this simple tutorial will help youo. Happy Coding.    

Redirect to SMS

In this tutorial, I will show you some tutorial that redirecting or passing message to built in Messages Apps in your Android phone. From your Android Apps, you pass a message to it messages field. See the code below.

Intent smsIntent = new Intent(Intent.ACTION_VIEW);
smsIntent.setData(Uri.parse("sms:"));
smsIntent.putExtra("sms_body", "Your message"));
startActivity(smsIntent);


To only send a number, use this code.

startActivity(new Intent(Intent.ACTION_VIEW, Uri.fromParts("sms", "number", null)));


That's it, hope this simple tutorial will help you. Happy Coding...