如何添加图片到android.support.v7.app.AlertDialog

Question

文档是这样说的：

If you want to display a more complex view, look up the FrameLayout called "custom" and add your view to it:
FrameLayout fl = (FrameLayout) findViewById(android.R.id.custom);
 fl.addView(myView, new LayoutParams(MATCH_PARENT, WRAP_CONTENT));

我的代码如下所示：

android.support.v7.app.AlertDialog alert = builder.create();

ImageView myView = new ImageView(mContext);
myView.setImageResource(R.drawable.image);

FrameLayout f1 = (FrameLayout) findViewById(android.R.id.custom);
f1.addView(myView, new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

alert.show();

f1 始终为 null，因此出现 NullPointerException。

如果我像下面这样更改代码，它没有帮助：

FrameLayout f1 = (FrameLayout) alert.findViewById(android.R.id.custom);

网站上有一个关于自定义布局充气机的类似问题，但这是不同的情况。

Answer 1

您只需添加setView (View view, int viewSpacingLeft, int viewSpacingTop, int viewSpacingRight, int viewSpacingBottom)

     AlertDialog.Builder builder = alertDialogBuilder
            .setTitle("title")
            .setView(fl,24,24,24,24)
            .setPositiveButton("OK",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int id) {
                            {
                                dialog.cancel();
                            }
                        }
                    });

    AlertDialog alertDialog = builder .create();
    alertDialog.show();

如何添加图片到android.support.v7.app.AlertDialog

How to add a picture to android.support.v7.app.AlertDialog

alert

android

dialog