ac01.java

基于ANdroid平台的高欢堂书籍的对应源代码 非常有用

package com.misoo.gx05;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class ac01  extends Activity implements OnClickListener {
		private Button[] btn;
		private int curr;
		private Calculator calc;
		private TextView tv;
		@Override
	    public void onCreate(Bundle savedInstanceState) {
	    	super.onCreate(savedInstanceState);
	    	// ----- for testing --------------------- 
	    	   /*   setContentView(R.layout.main);
	    	        int digit_1 = 1;
	    	        int digit_2 = 1;
	    	        int cs = NativeJniAdder.calculate(digit_1, digit_2);
	    	        int sum = cs % 10;  	int carry = cs / 10;
	    			String carry_sum_str = String.valueOf(carry) + String.valueOf(sum);
	    			setTitle("[" + carry_sum_str +"]");
	           */
	        //-------------------------------
	        btn = new Button[6];
	        setContentView(R.layout.bi_cal_layout);
	        tv = (TextView)findViewById(R.id.tv);
	        tv.setTextColor(Color.BLACK);
	        tv.setText("><");
	        btn[0] = (Button)findViewById(R.id.btn_0);
	        btn[0].setOnClickListener(this);
	        btn[1] = (Button)findViewById(R.id.btn_1);
	        btn[1].setOnClickListener(this);
	        btn[2] = (Button)findViewById(R.id.btn_2);
	        btn[2].setOnClickListener(this);
	        btn[3] = (Button)findViewById(R.id.btn_3);
	        btn[3].setOnClickListener(this);
	        btn[4] = (Button)findViewById(R.id.btn_4);
	        btn[4].setOnClickListener(this);
	        btn[5] = (Button)findViewById(R.id.btn_5);
	        btn[5].setOnClickListener(this);
	        //----------------------------------------
	        
	        calc = new Calculator(this);
	        curr = -1;
	   	}
		public void show(String tx){
			tv.setText(tx);
		}
		
		public void onClick(View arg0) {
			// TODO Auto-generated method stub
			if(arg0 == btn[0])
				{ calc.EvDigitPress(1);  curr = 0; }
			else if(arg0== btn[1])
			{	calc.EvDigitPress(0); curr = 1;}
			else if(arg0== btn[2])
				{ calc.EvCPress();  curr = 2; }
			else if(arg0== btn[3])
				{ calc.EvPlusPress(); curr = 3; }
			else if(arg0== btn[4])
				{ calc.EvAssignPress(); curr = 4; }
			else if(arg0== btn[5])
				{ finish(); }
			setting_color();
		}
		
		public void setting_color() {
			for(int i = 0; i<6; i++ )
			{
				if(i == curr)
					btn[i].setTextColor(Color.RED);
				else
					btn[i].setTextColor(Color.BLACK);
		    }
		}
	}