Android Programming

Panchankam-2014

1. MainActivity.java

package com.ramki.panchankam2014;

import android.annotation.SuppressLint;
import android.graphics.Matrix;
import android.graphics.PointF;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.util.FloatMath;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends ActionBarActivity {
int i, j;
Matrix matrix = new Matrix();
Matrix savedMatrix = new Matrix();
PointF startPoint = new PointF();
PointF midPoint = new PointF();
float oldDist = 1f;
static final int NONE = 0;
static final int DRAG = 1;
static final int ZOOM = 2;
int mode = NONE;

// PhotoViewAttacher mattacher;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
Button Next = (Button) findViewById(R.id.button1);
Button Prev = (Button) findViewById(R.id.button2);
Button Home = (Button) findViewById(R.id.button3);
final ImageView IV = (ImageView) findViewById(R.id.imageView1);

i = 1;
j = 0;

IV.setOnTouchListener(new View.OnTouchListener() {

@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
ImageView view = (ImageView) v;
System.out.println("matrix=" + savedMatrix.toString());
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
savedMatrix.set(matrix);
startPoint.set(event.getX(), event.getY());
mode = DRAG;
break;
case MotionEvent.ACTION_POINTER_DOWN:
oldDist = spacing(event);
if (oldDist > 10f) {
savedMatrix.set(matrix);
midPoint(midPoint, event);
mode = ZOOM;
}
break;
case MotionEvent.ACTION_UP:

case MotionEvent.ACTION_POINTER_UP:
mode = NONE;
break;

case MotionEvent.ACTION_MOVE:
if (mode == DRAG) {
matrix.set(savedMatrix);
matrix.postTranslate(event.getX() - startPoint.x,
event.getY() - startPoint.y);
} else if (mode == ZOOM) {
float newDist = spacing(event);
if (newDist > 10f) {
matrix.set(savedMatrix);
float scale = newDist / oldDist;
matrix.postScale(scale, scale, midPoint.x,
midPoint.y);

}
}
break;

}
view.setImageMatrix(matrix);
return true;

}

@SuppressLint("FloatMath")
private float spacing(MotionEvent event) {
float x = event.getX(0) - event.getX(1);
float y = event.getY(0) - event.getY(1);
return FloatMath.sqrt(x * x + y * y);
}

private void midPoint(PointF point, MotionEvent event) {
float x = event.getX(0) - event.getX(1);
float y = event.getY(0) - event.getY(1);
point.set(x / 2, y / 2);

}
});

Next.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub

i = i + 1;
if( i > 30){
i = 1;
}

int j = getResources().getIdentifier("panchangam_2014_" + i,
"drawable", getPackageName());

IV.setImageResource(j);
// mAttacher = new PhotoViewAttacher(IV);

}
});

Prev.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub

i = i - 1;
if( i < 1){
i = 1;
}
int j = getResources().getIdentifier("panchangam_2014_" + i,
"drawable", getPackageName());

IV.setImageResource(j);

}
});

Home.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub

IV.setImageResource(R.drawable.panchangam_2014_1);
i = 1;
j = 0;

}
});

return true;
}
}

2. layout.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:background="@color/abc_search_url_text_normal"
tools:context="com.ramki.panchankam2014.MainActivity$PlaceholderFragment" >

<ImageView
android:id="@+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="matrix"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:src="@drawable/panchangam_2014_1" />

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginLeft="20dp"
android:layout_toRightOf="@+id/button3"
android:text="@string/next"/>

<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button1"
android:layout_alignBottom="@+id/button1"
android:layout_alignParentLeft="true"
android:text="@string/prev"/>

<Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button1"
android:layout_alignBottom="@+id/button1"
android:layout_marginLeft="15dp"
android:layout_toRightOf="@+id/button2"
android:text="@string/home"/>

</RelativeLayout>

3. Mainfest.xml

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

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.ramki.panchankam2014"

android:versionCode="3"

android:versionName="1.1" >

<uses-sdk

android:minSdkVersion="8"

android:targetSdkVersion="19" />

<application

android:allowBackup="true"

android:icon="@drawable/panchangam_2014_1"

android:label="@string/app_name"

android:theme="@style/AppTheme" >

<activity

android:name="com.ramki.panchankam2014.MainActivity"

android:label="@string/app_name" >

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

Android Programming

Sunday, July 20, 2014

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