安卓putExtras
时间: 2023-11-22 12:06:02 浏览: 79
putExtras()是一个方法,用于将数据添加到Intent对象中。Intent对象是在不同组件之间传递数据的一种方式。putExtras()方法允许您将键值对添加到Intent对象中,以便在接收方组件中使用这些值。
例如,您可以在一个Activity中使用putExtras()方法将一个字符串值添加到Intent对象中,然后在另一个Activity中使用getExtras()方法获取该值:
//在Activity1中
Intent intent = new Intent(Activity1.this, Activity2.class);
intent.putExtra("key", "value");
startActivity(intent);
//在Activity2中
String value = getIntent().getExtras().getString("key");
在上面的例子中,我们使用putExtra()方法将一个字符串值添加到Intent对象中,并使用getExtras()方法在另一个Activity中获取该值。在putExtra()方法中,我们指定了一个键“key”和一个值“value”,然后在getExtras()方法中使用相同的键来检索该值。
相关问题
intent.putextras(bundle)
As an AI language model, I am not able to access the context of your code. However, I can provide you with a general explanation of the method `putExtras()` of the `Intent` class in Android.
`putExtras()` is a method used to add extra information to an `Intent` object. It takes a `Bundle` object as a parameter which contains key-value pairs of the extra information you want to add. The `Bundle` object can be created using the `putExtra()` method of the `Bundle` class.
The extra information can be any type of data such as strings, integers, arrays, or even custom objects. The `Intent` object can then be passed to another activity or service using the `startActivity()` or `startService()` methods.
In summary, `putExtras()` is used to add extra information to an `Intent` object and the `Bundle` object parameter contains the key-value pairs of this extra information.
android cannot resolve method
问题:android cannot resolve method
回答:根据提供的代码和引用内容,问题出现在跳转部分的代码中。错误提示是"Cannot resolve method 'putExtra(android.os.Bundle)'",这意味着在Intent的putExtra方法中传入的参数类型不正确。在你的代码中,你使用了putExtra方法来传递一个Bundle对象,但是putExtra方法的参数应该是一个String类型的键和对应的值。所以正确的写法应该是putExtras方法,而不是putExtra方法。所以你需要将代码修改为:
startActivity(new Intent(context, JumpWepPageActivity.class).putExtras(mBundle));
这样就能正确地传递Bundle对象了。希望这能解决你的问题。
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