在 onCreate() 中带有自定义视图的 AlertDialog

Question

这是我的代码：

    public class MainActivity extends Activity {

    private static final int CONFIRMATION_DIALOG = 0;
    private View mLoginConfirmView;
    private TextView mTextViewLoginConfirm;
    private CheckBox mCheckBoxLoginConfirm;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        mLoginConfirmView = View.inflate(this, R.layout.dialog_login_confirmation, null);
        mTextViewLoginConfirm = (TextView) mLoginConfirmView.findViewById(R.id.textView_DialogTranspConfirm);
        mCheckBoxLoginConfirm = (CheckBox) mLoginConfirmView.findViewById(R.id.checkBox_DialogTranspConfirm);

        showDialog(CONFIRMATION_DIALOG);
    }

    @Override
    @Deprecated
    protected Dialog onCreateDialog(int id) {
        switch (id) {
        case CONFIRMATION_DIALOG: {


            return new AlertDialog.Builder(this)
            .setIcon(android.R.drawable.stat_sys_warning)
            .setTitle(R.string.app_name)
            .setView(mLoginConfirmView)
            .setPositiveButton(R.string.change, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int whichButton) {

                    dialog.dismiss();

                    showDialog(EXIT_PROGRESS_DIALOG);
                }
            })
            .setNegativeButton(R.string.go_ahead, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int whichButton) {

                    dialog.dismiss();

                    if (mCheckBoxLoginConfirm.isChecked())
                        setConfirmationDialogHidden();
                }
            })
            .create();
        }
            break;

        default:
            break;
        }
        return super.onCreateDialog(id);
    }

    @Override
    @Deprecated
    protected void onPrepareDialog(int id, Dialog dialog) {
        switch (id) {
        case CONFIRMATION_DIALOG: 

            CheckBox checkBox = (CheckBox)dialog.findViewById(R.id.checkBox_DialogTranspConfirm);
            checkBox.setChecked(false);
            TextView textView = (TextView)dialog.findViewById(R.id.textView_DialogTranspConfirm);
            textView.setText(getString(R.string.you_use_service_for, Utils.getNumber()));


            break;

        default:
            break;
        }
        super.onPrepareDialog(id, dialog);
    }
}

它只在 HTC One S 上崩溃，当我的应用从后台返回时，我设置了自定义视图：

.setView(mLoginConfirmView)

抛出：java.lang.IllegalStateException：指定的孩子已经有一个父母。您必须首先在孩子的父母上调用 removeView()。 我决定添加以下检查：如果视图有父视图，我什么也不做：

@Override
    @Deprecated
    protected Dialog onCreateDialog(int id) {
        switch (id) {
        case CONFIRMATION_DIALOG: {

        ViewGroup parent = (ViewGroup) mLoginConfirmView.getParent();
            if (parent!=null)
                return super.onCreateDialog(id);

            return new AlertDialog.Builder(this)
            .setIcon(android.R.drawable.stat_sys_warning)
            .setTitle(R.string.app_name)
            .setView(mLoginConfirmView)
            .setPositiveButton(R.string.change, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int whichButton) {

                    dialog.dismiss();

                    showDialog(EXIT_PROGRESS_DIALOG);
                }
            })
            .setNegativeButton(R.string.go_ahead, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int whichButton) {

                    dialog.dismiss();

                    if (mCheckBoxLoginConfirm.isChecked())
                        setConfirmationDialogHidden();
                }
            })
            .create();
        }
            break;

        default:
            break;
        }
        return super.onCreateDialog(id);
    }

这是正确的方法吗？我可以显示来自 onCreate() 的对话框吗？

Answer 1

由于activity的UI还没有准备好，并且activity还没有显示给用户，android会在onResume()执行完成后显示屏幕，尝试从onResume()显示对话框

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