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i have a small query, Suppose we start an activity using intents

startActivity(intent);

and a new screen opens up with content in it,like buttons and text fields I just need to know if its possible to fetch the details about the layout and its contents.

I think its not possible, but just wanted to get a proper confirmation.

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2 に答える 2

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No, it's not possible to do this. And (from comments) no, it's not possible to "click" a button from a separate Activity. What you can do, however, is this:

// Calling code:
intent.putExtra(getPackageName() + ".click_me", R.id.your_button); // getPackageName() is for best practices
startActivity(intent);

// In your Activity:
Intent intent = getIntent(); // Get the Intent we used to launch this
int buttonToClick = intent.getIntExtra(getPackageName() + ".click_me", 0); // Get the integer
if (buttonToClick != 0) { // If it's 0, we didn't specify it
    View toClick = findViewById(buttonToClick); // Find the View
    if (toClick != null && toClick instanceof Button) { // If the View exists, and is a Button..
        ((Button) toClick).performClick(); // ..then click it
    }
}

You provide the Intent that starts the Activity with an integer. This integer represents a View (more specifically, a Button). Once the Activity receives it, it finds the matching View, checks if its a Button, then performs a click action on it.

This way, you're just passing the integer ID of an item to click, and your opened Activity just handles the rest.

于 2012-08-28T05:03:31.293 に答える
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You can get the contents using getChildAt()

for(int i=0; i<((ViewGroup)v).getChildCount(); ++i) {
    View nextChild = ((ViewGroup)v).getChildAt(i);
}
于 2012-08-28T05:01:01.827 に答える