Passing extra Intent information from Activity to View

Question

I have an activity that is launched from another activity through an intent. The intent carries an extra "id" information. Now, the launched activity has a custom view (actually, a extension of LinearLayout class). I want to access the "id" information in the custom view. Can the activity pass that value to its contained view? Or can the view get a handle to the activity?

Answer 1

YES,

First you have pass id with the intent like

Intent i=new Intent(getApplicationContext(), sample.class);
i.putExtra("id", id);
startActivity();

it pass the value to sample class

here

String i=getIntent().getExtras().getSerializable("id").toString();

& you can use this id in your custom view

Answer 2

在视图中创建一个以id作为参数的方法，然后从您的activity中调用该方法。

Answer 3

是的，您的自定义View类可以获得对它所包含的Activity的引用。每个View都有一个getContext（）方法，它返回View正在运行的Context（即您的Activity）。