SmartOnTouchListener

SmartOnTouchListener.java

/**
 * @author Nguyen Viet Hung (hvnsweeting@gmail.com)
 * @version 1.0
 * SmartOnTouchListener class help convert your onTouch into single-click and drag&drop, double-click and drag&drop or long-click and drag&drop
 */
package com.aps.smartbar.quicksettings.service;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Handler;
import android.os.Vibrator;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.WindowManager;
import android.widget.ImageView;

import com.aps.smartbar.quicksettings.activity.MainActivity;

class SmartOnTouchListener implements OnTouchListener {

	private WindowManager wm;
	private WindowManager.LayoutParams params;
	private Context context;
	private SharedPreferences mPreferences;
	private ImageView mIcon;

	private long down = 0;
	int action;
	int choosed;
	long downTime;
	float mCurX, mCurY;
	float downX, downY;
	double movingDistance;

	private final long VIBRATE_INTERVAL = 80;
	private final long DOUBLE_CLICK_INTERVAL = 300;
	private final int LONG_CLICK_INTERVAL = 190;
	private final double MOVING_R = 15;
	// private static final String TAG = "com.hvn.android";
	int halfOfIconSize;
	private long thisTime = 0;
	private long lastTouchTime = 0;

	Handler handler = new Handler();
	Runnable singleClickTask = new Runnable() {
		public void run() {
			thisTime = System.currentTimeMillis();
			startActivity(MainActivity.class);
			vibrateIfHapticIsEnabled();
		}
	};

	public SmartOnTouchListener(Context context, WindowManager wm,
			WindowManager.LayoutParams params, SharedPreferences mPreferences,
			ImageView mIcon) {
		this.context = context;
		this.wm = wm;
		this.params = params;
		this.mPreferences = mPreferences;
		this.mIcon = mIcon;
		halfOfIconSize = mPreferences.getInt("size", 25) / 2;
	}

	@Override
	public boolean onTouch(View v, MotionEvent event) {
		action = event.getAction();
		mCurX = event.getRawX();
		mCurY = event.getRawY();

		// You should choose click style somewhere and put value to preferences
		choosed = mPreferences.getInt("click_style", 1);
		if (choosed == 1)
			return setOnSingleClickAndMove(event);
		else if (choosed == 2)
			return setOnDoubleClickAndMove(event);
		else
			return setOnLongClickAndMove(event);
	}

	private boolean setOnLongClickAndMove(MotionEvent event) {
		if (action == MotionEvent.ACTION_DOWN) {
			downX = event.getRawX();
			downY = event.getRawY();
			downTime = event.getEventTime();
			movingDistance = 0;

			// start MainActivity with timer
			handler.postDelayed(singleClickTask, LONG_CLICK_INTERVAL);
		} // ACTION_DOWN

		if (action == MotionEvent.ACTION_MOVE) {
			// MOVE View
			moveView();

			movingDistance = Math.sqrt((mCurX - downX) * (mCurX - downX)
					+ (mCurY - downY) * (mCurY - downY));
			if (movingDistance > MOVING_R) {
				// cancel callback
				handler.removeCallbacks(singleClickTask);
			}// if
		}// ACTION_MOVE

		if (action == MotionEvent.ACTION_UP) {
			// Cancel callback
			handler.removeCallbacks(singleClickTask);
			if (movingDistance > MOVING_R) {
				putLastXYToPreference();
			}
		}// ACTION_UP

		return false;
	}// setOnLongClickAndMove

	private boolean setOnDoubleClickAndMove(MotionEvent event) {
		if (action == MotionEvent.ACTION_DOWN) {
			vibrateIfHapticIsEnabled();
			long now = System.currentTimeMillis();
			thisTime = now;
			if (thisTime - lastTouchTime < DOUBLE_CLICK_INTERVAL) {
				// Double tap
				handler.removeCallbacks(singleClickTask);
				thisTime = System.currentTimeMillis();

				startActivity(MainActivity.class);
				// If is double tap, reset to start state.
				lastTouchTime = -1;
				return true;
			} else {
				// If not double tap (too slow or single click), save
				// last state for next check
				lastTouchTime = System.currentTimeMillis();
			}// else
		}// ACTION_DOWN
		if (action == MotionEvent.ACTION_MOVE) {
			params.x = (int) mCurX - halfOfIconSize;
			params.y = (int) mCurY - halfOfIconSize;
			wm.updateViewLayout(mIcon, params);
		}// ACTION_MOVE

		if (action == MotionEvent.ACTION_UP)
			putLastXYToPreference();
		return false;
	}// setOnDoubleClickAndMove

	private boolean setOnSingleClickAndMove(MotionEvent event) {
		if (action == MotionEvent.ACTION_DOWN) {
			vibrateIfHapticIsEnabled();
			down = event.getEventTime();
		} else if (action == MotionEvent.ACTION_MOVE) {
			moveView();
		} else if (action == MotionEvent.ACTION_UP) {
			long up = event.getEventTime();
			if (up < down + LONG_CLICK_INTERVAL) {
				vibrateIfHapticIsEnabled();
				startActivity(MainActivity.class);
			}// if is normal click
			else {
				putLastXYToPreference();
			}// else is moving action
		}// ACTION_UP
		return true;
	}// setOnSingleClickAndMove

	private void moveView() {
		params.x = (int) mCurX - halfOfIconSize;
		params.y = (int) mCurY - halfOfIconSize;
		wm.updateViewLayout(mIcon, params);
	}// moveView

	private void vibrateIfHapticIsEnabled() {
		if (mPreferences.getBoolean("haptic_feedback", false)) {
			Vibrator vib = (Vibrator) context
					.getSystemService(Context.VIBRATOR_SERVICE);
			vib.vibrate(VIBRATE_INTERVAL);
		}// if hapticEnabled
	}// vibrateIfHapticIsEnabled

	private void putLastXYToPreference() {
		Editor editor = mPreferences.edit();
		editor.putFloat("x", (float) params.x);
		editor.putFloat("y", (float) params.y);
		editor.commit();
	}// putLastXYToPreference

	protected void startActivity(Class<MainActivity> class1) {
		context.startActivity((new Intent(context, MainActivity.class))
				.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
						| Intent.FLAG_ACTIVITY_CLEAR_TOP));
	}// startActivity

}// SmartOnTouchListener