动态添加代码
import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;/** * Class which shows how to change dynamically options menu items * @author FaYnaSoft Labs */public class Main extends Activity { private Button clickBtn; private boolean isChangedStat = false; private static final int MENUITEM = Menu.FIRST; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); clickBtn = (Button) findViewById(R.id.click); clickBtn.setText("Click me"); clickBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (isChangedStat) { isChangedStat = false; } else { isChangedStat = true; } } }); } @Override public boolean onPrepareOptionsMenu(Menu menu) { menu.clear(); if (isChangedStat) { menu.add(0, MENUITEM, 0, "True"); } else { menu.add(0, MENUITEM, 0, "False"); } return super.onPrepareOptionsMenu(menu); }}
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