在警报对话框中修改编辑文本颜色将不起作用

Question

我是一名android应用程序编程新手。我需要的应用程序应用程序启动后的密码请求.....到目前为止一切顺利。

但是在调用我的alertdialog时，输入的文本不能被看到，因此它总是与背景颜色相同。我使用API第17级作为目标API。

如果有人能给我一个提示，我会很高兴的。

        if (dbManager.getToggle()==true){
        final EditText txtPIN = new EditText(this);
        txtPIN.setTextColor(color.black);
        txtPIN.setInputType(InputType.TYPE_CLASS_NUMBER);
        AlertDialog.Builder alert = new AlertDialog.Builder(this,AlertDialog.THEME_HOLO_LIGHT);
        alert.setTitle("PIN Security");
        alert.setMessage("Please enter PIN");
        alert.setView(txtPIN);
        alert.setIcon(R.drawable.ic_launcher);
        alert.setPositiveButton(getResources().getString(R.string.ok), new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int whichButton) {
                //comparison of PINs
                if (txtPIN.getText().toString().equals(dbManager.getPIN()){
                    Toast toast =  Toast.makeText(getApplicationContext(), R.string.allowed, Toast.LENGTH_SHORT);
                    toast.setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 150);
                    toast.show();
                } else {
                    Toast toast =  Toast.makeText(getApplicationContext(), getResources().getString(R.string.denied) + "n" + txtPIN.getText().toString() + "n" + dbManager.getPIN(), Toast.LENGTH_SHORT);
                    toast.setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 150);
                    toast.show();
                    finish();
                    System.exit(0);
                }
            }
        });

Answer 1

使用xml创建您的EditText:

<EditText xmlns:andoird="http://schemas.android.com/apk/res/android"
     android:id="@+id/edit_text"
     android:inputType="number"
     android:textColor="#000000"
     android:OTHER_ATTRIBUTES_HERE/>

然后像这样创建您的AlertDialog:

 AlertDialog.Builder alert = new AlertDialog.Builder(this,AlertDialog.THEME_HOLO_LIGHT);
 LayoutInflater inflater = getActivity().getLayoutInflater();
 View v = inflater.inflate(R.layout.edit_text_xml_file, null));
    alert.setTitle("PIN Security");
    alert.setMessage("Please enter PIN");
    alert.setView(v);
    alert.setIcon(R.drawable.ic_launcher);
    EditText txtPIN = (EditText) v.findViewById(R.id.edit_text);
    alert.setPositiveButton(getResources().getString(R.string.ok), new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            //comparison of PINs
            if (txtPIN.getText().toString().equals(dbManager.getPIN()){
                Toast toast =  Toast.makeText(getApplicationContext(), R.string.allowed, Toast.LENGTH_SHORT);
                toast.setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 150);
                toast.show();
            } else {
                Toast toast =  Toast.makeText(getApplicationContext(), getResources().getString(R.string.denied) + "n" + txtPIN.getText().toString() + "n" + dbManager.getPIN(), Toast.LENGTH_SHORT);
                toast.setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 150);
                toast.show();
                finish();
                System.exit(0);
            }
        }