Android 按下后退时警告对话框消失？

Question

当我点击系统后退按钮时，我的警报对话框关闭，我不想关闭我的警报，我的代码在这里：-

fun shoWResultPopUp() {
    if (!isFinishing()) {
        val mBuilder = AlertDialog.Builder(this@ExamActivity)
        val mView = layoutInflater.inflate(R.layout.show_result_popup, null)
        val mResult = mView.findViewById(R.id.resultBtn) as Button
        mBuilder.setView(mView)
        val dialog = mBuilder.create()
        dialog.setCanceledOnTouchOutside(false);
        dialog.show()

        mResult.setOnClickListener {
            val intent = Intent(this, ResultActivity::class.java)
            startActivity(intent)
        }
    }
}

override fun onBackPressed() {
    return
}

Answer 1

您需要设置：

dialog.setCancelable(false)

根据此方法的 Android 文档：

Sets whether this dialog is cancelable with the {@link KeyEvent#KEYCODE_BACK BACK} key.

所以这正是您想要的情况。

注：

dialog.setCanceledOnTouchOutside 是为了 preventing/allowing 弹出窗口在弹出窗口外触摸时关闭，而不是后退按钮。文档：

Sets whether this dialog is canceled when touched outside the window's bounds. If setting to true, the dialog is set to be cancelable if not already set.

Answer 2

你可以查看这个link Dismiss Dialog onBackPressAndroid

dialog.setOnCancelListener(new DialogInterface.OnCancelListener()
{
    @Override
    public void onCancel(DialogInterface dialog)
    {
         MyActivity.this.finish();
    }
});

Android 按下后退时警告对话框消失？

Android Alert dialog is dismissing on Back press?

android

android-alertdialog

kotlin