Android 创建菜单项Menu及获取手机分辨率

 

在Activity中覆写下面两个方法:

// 创建菜单@Overridepublic boolean onCreateOptionsMenu(Menu menu) {menu.add(0, 0, 0, "关于");// menu.add(int groupId, int itemId, int order, CharSequence title)menu.add(0, 1, 1, "退出");        return super.onCreateOptionsMenu(menu);}// 菜单响应@Overridepublic boolean onOptionsItemSelected(MenuItem item) {super.onOptionsItemSelected(item);switch (item.getItemId()) {case 0:Toast.makeText(getApplicationContext(), "关于Livingstone的博客", 1).show();break;case 1:this.finish();break;}return true;}
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获取手机分辨率大小

private DisplayMetrics dm = new DisplayMetrics();

                getWindowManager().getDefaultDisplay().getMetrics(dm);

                //获得手机的宽带和高度像素单位为px

                String str = "手机屏幕分辨率为:" + dm.widthPixels +" * "+dm.heightPixels;