动态设置自定义AlertDialog内容 [英] Dynamically set custom AlertDialog content

问题描述

我有我的设置功能自定义对话框：

I have a custom dialog that I set up as a function:

public void customDialog(Bitmap bm, String title){
    TextView dialogtext = (TextView)findViewById(R.id.layout_root);
    //For above also tried r.id.popup which is the containing file for the layout
    ImageView dialogimage = (ImageView)findViewById(R.id.popupimage); 

    dialogtext.setText(title);
    dialogimage.setImageBitmap(bm);

    LayoutInflater inflater = getLayoutInflater();
    View layout = inflater.inflate(R.layout.popup, (ViewGroup) findViewById(R.id.layout_root));
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setView(layout);
    builder.show();
}

每当我试图用一个空指针异常动态设置XML领域的对话失败。我很为难，任何想法？我一定要添加一些清单自定义对话框？

The dialog fails whenever I try to set the XML fields dynamically with a Null Pointer Exception. I'm stumped, any ideas? Do I have to add something to the manifest for a custom dialog?

推荐答案

为此，首先：

查看布局= inflater.inflate（R.layout.popup，（ViewGroup中）findViewById（R.id.layout_root））;

然后，定义在布局，做到这一点：

Then, after you define layout, do this:

ImageView的dialogimage =（ImageView的）layout.findViewById（R.id.popupimage）;

呼叫 findViewByID（）上创建新的布局，而不是在父内容视图。

Call findViewByID() on the new layout you created, not on the parent content view.

于是两个变化：订购和 layout.findView 不是 findView

So two changes: Ordering, and layout.findView not findView

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