如何显示假进度2秒？ [英] How to show dummy progressbar for 2 second?

问题描述

我只是想显示进度条之前，新的活动开始。当我开始从previous活动活动，新画面首先显示伪进度条（白色屏幕只有进度）和后2〜3第二阶段开始新的活动。

  listCategory.setOnItemClickListener（新OnItemClickListener（）{

    公共无效onItemClick（适配器视图＆LT;＆GT;为arg0，查看ARG1，INT位置，长ARG3）{
        意图iMenuList =新的意图（thirdstep.this，fifthscreen.class）;
        startActivity（iMenuList）;
    }
}）;

公共类fifthscreen延伸活动{

    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.fifthscreen）;
    }
}
 

解决方案

您可以使用处理程序如下尝试：

  listCategory.setOnItemClickListener（新OnItemClickListener（）{
    公共无效onItemClick（适配器视图＆LT;＆GT;为arg0，查看ARG1，
        INT位置，长ARG3）{
//显示你的进度在这里
处理器mHand =新的处理程序（）;
    mHand.postDelayed（新的Runnable（）{

        @覆盖
        公共无效的run（）{
            // TODO自动生成方法存根
            意图iMenuList =新的意图（thirdstep.this，fifthscreen.class）;
            //辞退进度这里
            startActivity（iMenuList）;
        }
    }，2000）;
    }
}
}）;
 

您需要把这个code onItemClick 方法内。

I just want to show progress bar before new activity starts. When I start activity from previous activity, the new screen first shows dummy progress bar (white screen with only progressbar) and after 2 or 3 second starts the new activity.

listCategory.setOnItemClickListener(new OnItemClickListener() {

    public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
        Intent iMenuList = new Intent(thirdstep.this,  fifthscreen.class);
        startActivity(iMenuList);
    }
});

public class fifthscreen extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.fifthscreen);
    }
}

解决方案

You can try it using handler as below:

listCategory.setOnItemClickListener(new OnItemClickListener() {
    public void onItemClick(AdapterView<?> arg0, View arg1,
        int position, long arg3) {
//Display your progressBar here
Handler mHand  = new Handler();
    mHand.postDelayed(new Runnable() {

        @Override
        public void run() {
            // TODO Auto-generated method stub
            Intent iMenuList = new Intent(thirdstep.this,  fifthscreen.class);
            //Dismiss progressBar here
            startActivity(iMenuList);
        }
    }, 2000);   
    }
}
});

You need to put this code inside onItemClick method.

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