Question

我有一个ALertDialog，允许用户输入引脚号。TextWatcher检查引脚的长度，然后在EditText中的文本长度与存储引脚的长度匹配时检查引脚是否正确。。尝试成功进行销钉时，我试图关闭/取消对话框。我已经尝试了dialog.dismiss（）;和dialog.cancel（）;但都不起作用。

为了清楚起见，我试图在if / else的“ else”部分中关闭AlertDialog。感谢您的关注

代码：

 AlertDialog.Builder builder;

public void dialog() {

builder = new AlertDialog.Builder(getContext());
builder.setTitle("Title");
// I'm using fragment here so I'm using getView() to provide ViewGroup
// but you can provide here any other instance of ViewGroup from your Fragment / Activity
View viewInflated = LayoutInflater.from(getContext()).inflate(R.layout.pword, (ViewGroup) getView(), false);
// Set up the input
final EditText input = (EditText) viewInflated.findViewById(R.id.input);
// Specify the type of input expected; this, for example, sets the input as a password, and will mask the text
builder.setView(viewInflated);


builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        dialog.cancel();
        stopReader();
        startReader();
    }
});

builder.show();

input.addTextChangedListener(new TextWatcher() {
    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {


    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {


    }

    @Override
    public void afterTextChanged(Editable s) {

        m_Text = input.getText().toString();

        if (m_Text.length() == details.get(2).length()) {
            if (!input.getText().toString().equals(details.get(2))) {
                Toast.makeText(MainActivity.mainActivity, "Incorrect pin entered!", Toast.LENGTH_SHORT).show();
                Log.d("eLOQ", "User pin is not correct");

                input.setText("");

            } else if (input.getText().toString().equals(details.get(2))) {
                controller.startStageTwo();
                Log.d("eLOQ", "User pin is correct");


                dialog.dismiss();
            }
        }


    }
});

}

Answer 1

您必须在正确的位置使用 dialog.dismiss（）。仅在“用户密码正确”时才关闭对话框，而在“密码尝试成功”时不关闭对话框。如下更改代码：

 @Override
public void afterTextChanged(Editable s) {

    m_Text = input.getText().toString();

    if (m_Text.length() == details.get(2).length()) {
        if (!input.getText().toString().equals(details.get(2))) {
            Toast.makeText(MainActivity.mainActivity, "Incorrect pin entered!", Toast.LENGTH_SHORT).show();
            Log.d("eLOQ", "User pin is not correct");

            input.setText("");

        } else if (input.getText().toString().equals(details.get(2))) {
            controller.startStageTwo();
            Log.d("eLOQ", "User pin is correct");
     }
     dialog.dismiss();     // dismiss your dialog here. Here your dialog will dismiss in both caases
    }


}

祝你好运：）

Answer 2

dialog.hide(); or dialog.cancel();

如何在TextWatcher中关闭AlertDialog

2 个答案: