Android 应用框架原理与程序设计36技 10.4.2 里的VIEW完全弄不出来,求指点
--ac01.java
package com.example.kx04;
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
public class ac01 extends Activity implements OnClickListener {
private final int WC = ViewGroup.LayoutParams.WRAP_CONTENT;
private LinearLayout layout;
private GraphicView gv;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
layout = new LinearLayout(this);
layout.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(200,
300);
param.leftMargin = 1;
gv = new GraphicView(this);
layout.addView(gv, param);
Button btn = new Button(this);
btn.setText("Exit");
btn.setOnClickListener(this);
param = new LinearLayout.LayoutParams(WC, WC);
param.leftMargin = 10;
layout.addView(btn, param);
gv.build_model();
gv.requestFocus();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent msg) {
if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN)
gv.MoveDown();
if (keyCode == KeyEvent.KEYCODE_DPAD_UP)
gv.MoveUp();
if (keyCode == KeyEvent.KEYCODE_Z)
gv.zip_toggle();
return true;
}
public void onClick(View arg0) {
finish();
}
}