android 菜单事件处理
package com.example.wenandroid; import android.app.Activity; import android.os.Bundle; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.TextView; public class OptionMenuDemo extends Activity { private static final int MENU_ITEM_COUNTER=Menu.FIRST; private TextView mtextview; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.optionmenu); mtextview=(TextView)findViewById(R.id.mtextview); mtextview.setText("要大一点才能看清楚"); registerForContextMenu(mtextview); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { menu.add(0,MENU_ITEM_COUNTER+1,0,"白色"); menu.add(0, MENU_ITEM_COUNTER+2, 0, "黄色"); menu.add(0, MENU_ITEM_COUNTER+3, 0, "蓝色"); super.onCreateContextMenu(menu, v, menuInfo); } @Override public boolean onContextItemSelected(MenuItem item) { switch(item.getItemId()){ case MENU_ITEM_COUNTER+1: mtextview.setBackgroundResource(R.drawable.first); break; case MENU_ITEM_COUNTER+2: mtextview.setBackgroundResource(R.drawable.second); break; case MENU_ITEM_COUNTER+3: mtextview.setBackgroundResource(R.drawable.third); break; } return super.onContextItemSelected(item); } }
补充:移动开发 , Android ,