PowerPecentPreference.java

/*
 * Copyright (C) 2014 IUH �yber$oft Team
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package vn.cybersoft.obs.android.preference;

import android.content.Context;
import android.preference.EditTextPreference;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.View;
import android.widget.EditText;

/**
 * @author Luan Vu (hlvu.cybersoft@gmail.com)
 *
 */
public class PowerPecentPreference extends EditTextPreference {
	
	private static final int MAX_VALUE = 100;

	/**
	 * @param context
	 * @param attrs
	 */
	public PowerPecentPreference(Context context, AttributeSet attrs) {
		super(context, attrs);
	}
	
	@Override
	protected void onAddEditTextToDialogView(View dialogView, final EditText editText) {
		super.onAddEditTextToDialogView(dialogView, editText);
		editText.addTextChangedListener(new TextWatcher() {
			@Override
			public void onTextChanged(CharSequence s, int start, int before, int count) {
				if (!TextUtils.isEmpty(s)) {
					int value = Integer.valueOf(s.toString());
					if (value > MAX_VALUE) {
						editText.setText(Integer.toString(MAX_VALUE)); 
						editText.setSelection(3);
					}
				}
			}
			
			@Override
			public void beforeTextChanged(CharSequence s, int start, int count,
					int after) {
				// TODO Auto-generated method stub
			}
			
			@Override
			public void afterTextChanged(Editable s) {
				// TODO Auto-generated method stub
			}
		});
	}

}