package com.pinecone.technology.mcommerce.learning.android.chapter11.multiTouch;
// This file is MainActivity.java
import android.app.Activity;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.RelativeLayout;
import com.pinecone.technology.mcommerce.learning.android.chapter11.R;
public class MultiTouchActivity extends Activity implements OnTouchListener {
private int os;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.multi_touch_layout);
RelativeLayout layout1 = (RelativeLayout) findViewById(R.id.layout1);
layout1.setOnTouchListener(this);
try {
os = Build.VERSION.SDK_INT;
} catch (Exception e) {
Log.v("Demo", "Exception is: " + e);
os = 3;
}
}
public boolean onTouch(View v, MotionEvent event) {
String myTag = v.getTag().toString();
Log.v(myTag, "-----------------------------");
Log.v(myTag, "Got view " + myTag + " in onTouch");
Log.v(myTag, describeEvent(event));
logAction(event);
if ("true".equals(myTag.substring(0, 4))) {
return true;
} else {
return false;
}
}
protected String describeEvent(MotionEvent event) {
StringBuilder result = new StringBuilder(500);
result.append("Action: ").append(event.getAction()).append("\n");
int numPointers = event.getPointerCount();
result.append("Number of pointers: ").append(numPointers).append("\n");
if (os >= 9) // Introduced in Android 2.3
result.append("Event source: ").append(event.getSource())
.append("\n");
int ptrIdx = 0;
while (ptrIdx < numPointers) {
int ptrId = event.getPointerId(ptrIdx);
result.append("Pointer Index: ").append(ptrIdx);
result.append(", Pointer Id: ").append(ptrId).append("\n");
result.append(" Location: ").append(event.getX(ptrIdx));
result.append(" x ").append(event.getY(ptrIdx)).append("\n");
result.append(" Pressure: ").append(event.getPressure(ptrIdx));
result.append(" Size: ").append(event.getSize(ptrIdx))
.append("\n");
ptrIdx++;
}
result.append("Downtime: ").append(event.getDownTime()).append("ms\n");
result.append("Event time: ").append(event.getEventTime()).append("ms");
result.append(" Elapsed: ");
result.append(event.getEventTime() - event.getDownTime());
result.append(" ms\n");
return result.toString();
}
private void logAction(MotionEvent event) {
int action = event.getActionMasked();
int ptrIndex = event.getActionIndex();
int ptrId = event.getPointerId(ptrIndex);
if (action == 5 || action == 6)
action = action - 5;
Log.v("Action", "Pointer index: " + ptrIndex);
Log.v("Action", "Pointer Id: " + ptrId);
Log.v("Action", "True action value: " + action);
}
}