RLSpinner.java

/**
 * Copyright (c) 2013-2014, Rinc Liu (http://rincliu.com).
 *
 * 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 com.rincliu.library.widget;

import com.rincliu.library.R;
import com.rincliu.library.util.RLSysUtil;
import com.rincliu.library.widget.dialog.RLListDialog;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class RLSpinner extends ViewGroup {
    private TextView tv;

    private String[] items;

    private Listener listener;

    /**
     * @param context
     */
    public RLSpinner(Context context) {
        super(context);
        init(context, null);
    }

    /**
     * @param context
     * @param attrs
     */
    public RLSpinner(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context, attrs);
    }

    /**
     * @param context
     * @param attrs
     * @param defStyle
     */
    public RLSpinner(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init(context, attrs);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        for (int i = 0; i < getChildCount(); i++) {
            View child = getChildAt(i);
            child.layout(0, 0, child.getMeasuredWidth(), child.getMeasuredHeight());
        }
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        int childCount = getChildCount();
        for (int i = 0; i < childCount; i++) {
            View child = getChildAt(i);
            child.measure(widthMeasureSpec, heightMeasureSpec);
        }
    }

    private void init(final Context context, AttributeSet attrs) {
        View rootView = LayoutInflater.from(context).inflate(R.layout.spinner, null);
        tv = (TextView) rootView.findViewById(R.id.tv);
        if (attrs != null) {
            TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.RLSpinner);
            int resouceId = typedArray.getResourceId(R.styleable.RLSpinner_defaultText, 0);
            tv.setText(resouceId > 0 ? typedArray.getResources().getText(resouceId)
                    : typedArray.getString(R.styleable.RLSpinner_defaultText));
            tv.setTextColor(typedArray.getColor(R.styleable.RLSpinner_textColor, Color.BLACK));
            tv.setTextSize(RLSysUtil.px2dip(context, typedArray.getDimension(R.styleable.RLSpinner_textSize, 15)));
            typedArray.recycle();
        }
        tv.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View arg0) {
                if (items != null && listener != null) {
                    new RLListDialog(context, context.getString(R.string.select_item), items,
                            new RLListDialog.Listener() {
                                @Override
                                public void onItemClick(int position) {
                                    tv.setText(items[position]);
                                    listener.onItemSeleted(position);
                                }

                                @Override
                                public void onCancel() {}
                            }).show();
                }
            }
        });
        this.addView(rootView);
    }

    /**
     * @param defaultText
     */
    public void setDefaultText(String defaultText) {
        tv.setText(defaultText);
    }

    /**
     * @param color
     */
    public void setTextColor(int color) {
        tv.setTextColor(color);
    }

    /**
     * @param size
     */
    public void setTextSize(float size) {
        tv.setTextSize(size);
    }

    /**
     * @param items
     * @param listener
     */
    public void setItems(String[] items, Listener listener) {
        this.items = items;
        this.listener = listener;
    }

    /**
	 * 
	 */
    public interface Listener {
        public void onItemSeleted(int position);
    }
}