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  • 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);
    	}
    	
    
    }


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  • 原文地址:https://www.cnblogs.com/james1207/p/3278067.html
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