本文介绍了如何活动之间进行切换的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

在我的应用程序,我有三个活性

  1. 活动1

  2. 活动2

  3. 活动3

如何活动之间进行切换。

那么,如何才能做到这一点?

 公共布尔onOptionsItemSelected(菜单项项)
{

    开关(item.getItemId())
    {
        案例R.id.settingOpt:
            意向意图=新的意图(这一点,SettingsForm.class);
            this.startActivity(意向);
            this.finish();
        打破;

        案例R.id.reminderOpt:
            意图int​​entR =新的意图(这一点,ReminderForm.class);
            this.startActivity(intentR);
        打破;

        案例R.id.helpOpt:
            意图int​​entH =新的意图(这一点,HelpForm.class);
            this.startActivity(intentH);
            this.finish();
        打破;

        案例R.id.shareOpt:
            意图份额=新的意图(android.content.Intent.ACTION_SEND);
            share.setType(text / plain的);
            share.putExtra(Intent.EXTRA_SUBJECT的东西分享名称);
            share.putExtra(Intent.EXTRA_TEXTwww.gmail.com);
            startActivity(Intent.createChooser(份额,共享LoveCycle的网站链接你的朋友));
        打破;

        默认:

        返回super.onOptionsItemSelected(项目);
    }

    返回true;
}
 

解决方案

使用以下对Activity3后退按钮preSS事件方法:

 的setResult(R.id.common_backToActivity1);
 

和中活性2捕获的setResult如下,然后关闭此活动:

 保护无效onActivityResult(INT申请code,INT结果code,意图数据){
        开关(结果code){
        案例R.id.common_backToActivity1:
            closeActivity(); //完成活性2​​在此方法
            打破;
        }
        super.onActivityResult(要求code,因此code,数据);
    }
 

然后你会得到直接到活动1。

In my app I have three activity as

  1. Activity 1

  2. Activity 2

  3. Activity 3

How to switch between activities.

So how can this be done?

 public boolean onOptionsItemSelected(MenuItem item)
{

    switch (item.getItemId())
    {
        case R.id.settingOpt:
            Intent intent = new Intent(this, SettingsForm.class);
            this.startActivity(intent);
            this.finish();
        break;

        case R.id.reminderOpt:
            Intent intentR = new Intent(this, ReminderForm.class);
            this.startActivity(intentR);
        break;

        case R.id.helpOpt:
            Intent intentH = new Intent(this, HelpForm.class);
            this.startActivity(intentH);
            this.finish();
        break;

        case R.id.shareOpt:
            Intent share = new Intent(android.content.Intent.ACTION_SEND);
            share.setType("text/plain");
            share.putExtra(Intent.EXTRA_SUBJECT, "Name of the thing to share");
            share.putExtra(Intent.EXTRA_TEXT, "www.gmail.com");
            startActivity(Intent.createChooser(share, "Share LoveCycle's website link with your friends"));
        break;

        default:

        return super.onOptionsItemSelected(item);
    }

    return true;
}
解决方案

Use following method on back button press event in Activity3:

setResult(R.id.common_backToActivity1);

And in Activity2 capture that setResult as follows and close this Activity:

protected void onActivityResult(int requestCode, int resultCode,Intent data) {
        switch(resultCode){
        case R.id.common_backToActivity1:
            closeActivity();  //Finish Activity2 in this method
            break;
        }
        super.onActivityResult(requestCode, resultCode, data);
    }

Then you will get directly to Activity1.

这篇关于如何活动之间进行切换的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

08-23 03:35