PaintDemoActivity.java

package com.dwood.paintdemo;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class PaintDemoActivity extends Activity {
    Context context;
    private Button btnColorPicker;
    private TextView tvText;
    
    private ColorPickerDialog dialog;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
    	context = this;
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        initViews();
    }
    /**
     * 初始化UI
     */
    private void initViews() {
    	btnColorPicker = (Button) findViewById(R.id.btn_color_picker);
    	btnColorPicker.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				dialog = new ColorPickerDialog(context, tvText.getTextColors().getDefaultColor(), 
						getResources().getString(R.string.btn_color_picker), 
						new ColorPickerDialog.OnColorChangedListener() {
					
					@Override
					public void colorChanged(int color) {
						tvText.setTextColor(color);
					}
				});
				dialog.show();
			}
		});
    	tvText = (TextView) findViewById(R.id.tv_text);
    }
}