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.ppxx;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;

public class ac01 extends Activity implements OnClickListener, OnItemClickListener {
	private final int WC = LinearLayout.LayoutParams.WRAP_CONTENT; 
	private GraphicView gv = null;
	private LinearLayout current_layout = null;
	public int state_var_A = 0;  //initial
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        state_var_A = 0;
        current_layout = null;
    	gv = new GraphicView(this);  
    	goto_state_1();
     }
    
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent msg) {
       setTitle("");
       switch(keyCode) {
    	   case KeyEvent.KEYCODE_A:
    		   if(state_var_A == 1)
 	               this.goto_state_2();    
    		    break;
       }
	    return true;
	 } 
    
    void state_entry_action(){
    	if(current_layout != null)
    		current_layout.removeAllViewsInLayout();
    }
        
    void goto_state_1(){
    	state_var_A = 1;
    	this.state_entry_action();
    	LinearLayout layout_01 = new LinearLayout(this);
    	//--------------------------------------
    	current_layout = layout_01;
    	//--------------------------------------
        layout_01.setOrientation(LinearLayout.VERTICAL);
        LinearLayout.LayoutParams param = 
         	new LinearLayout.LayoutParams(150, 200);
        param.leftMargin = 1;
        param.topMargin = 3;
        layout_01.addView(gv,param);
        setContentView(layout_01);
    }
    
    void goto_state_2()  //go to state-02 
    {
    	state_var_A = 2;
    	this.state_entry_action();
    	LinearLayout.LayoutParams para;
    	LinearLayout layout = new LinearLayout(this);
    	//--------------------------------------
    	current_layout = layout;
    	//--------------------------------------
        layout.setOrientation(LinearLayout.VERTICAL);
        para = new LinearLayout.LayoutParams(150, 200);
        para.leftMargin = 1;
        para.topMargin = 3;
        layout.addView(gv,para);
        
        LayoutInflater inflate = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        LinearLayout in_yz_layout = (LinearLayout)inflate.inflate(R.layout.yz, null);
        Button y_btn = (Button)in_yz_layout.findViewById(R.id.y_btn); 
        Button z_btn = (Button)in_yz_layout.findViewById(R.id.z_btn); 
        y_btn.setId(101);
        y_btn.setOnClickListener(this);
        z_btn.setId(102);
        z_btn.setOnClickListener(this);
        
        para = new LinearLayout.LayoutParams(WC, WC);
        para.leftMargin = 5; 
        para.topMargin = 15;
        layout.addView(in_yz_layout, para);
        setContentView(layout);
    }
    
    void goto_state_3()  //go to state-02 
    {
    	state_var_A = 3;
    	this.state_entry_action(); //remove gv
    	LinearLayout.LayoutParams para;
    	LinearLayout layout_03 = new LinearLayout(this);
    	//--------------------------------------
    	current_layout = layout_03;
    	//--------------------------------------
        layout_03.setOrientation(LinearLayout.HORIZONTAL);
        para = new LinearLayout.LayoutParams(150, 200);
        para.leftMargin = 1;
        para.topMargin = 3;
        layout_03.addView(gv,para);
        
        ListView lv = new ListView(this);
        lv.setBackgroundResource(R.drawable.x_brown);
        String items[] = {"To