Question

我已经显示AlertDialog有2个按钮，即是和取消，这是代码。

final AlertDialog.Builder builder = new AlertDialog.Builder(RiderDetailActivity.this);
builder.setCancelable(false);
builder.setMessage("Are you sure?");

final AlertDialog dialog = builder.create();
builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialogInterface, int i) {
        dialog.dismiss();
    }
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialogInterface, int i) {
        dialog.dismiss();
    }
});
dialog.show();

这不会在三星Galaxy s4上显示是和取消按钮

但是当我与dialog.setButton一起使用时，它可以很好地运作

dialog.setButton(DialogInterface.BUTTON_POSITIVE, "Yes", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialogInterface, int i) {
        dialog.dismiss();
    }
});
dialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialogInterface, int i) {
        dialog.dismiss();
    }
});

注意： builder.setPositiveButton和builder.setNegativeButton仅在三星Galaxy S4上造成问题，对于其他正常运行的设备而言。

更新

我需要在为构建器设置按钮后创建对话框，但我关心的是为什么它与其他设备一起工作而只是用Samsung Galaxy S4创建问题？

Answer 1

试试这种方式。我希望这对你有用。

 final AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setCancelable(false);
    builder.setMessage("Are you sure?");
    builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {
            dialogInterface.dismiss();
        }
    });
    builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {
            dialogInterface.dismiss();
        }
    });
    final AlertDialog dialog = builder.create();
    dialog.show();

Answer 2

在alertDialog.show()方法后添加这两行

alertDialog.getButton(alertDialog.BUTTON_NEGATIVE).setTextColor(ContextCompat.getColor(_context, R.color.red));
alertDialog.getButton(alertDialog.BUTTON_POSITIVE).setTextColor(ContextCompat.getColor(_context, R.color.red));

Answer 3

在添加按钮之前，您正在创建对话框。

移动

bool Image::operator >> (string filename) {
    ofstream file;
    file.open(filename,ios::out | ios::binary);
    if (!file) {
        cerr << "Cannot open file" << endl;
        return false;
    }

    file << "P6" <<"\n";
    file << getWidth() << "\n";
    file << getHeight() << "\n";
    file << "255" << "\n";
    size_t size = height * width;
    void*img = getRawDataPtr(); //returns void* buffer 
    unsigned char * temp = new unsigned char[size*3];
    Vec3<float>* buff = (Vec3<float>*)img;

    for (int i = 0; i<size; i++) {
        Vec3<float> vector;
        vector[0] =buff[i].x;
        vector[1] = buff[i].y;
        vector[2] = buff[i].z; //  /255.f;
        buff[i] = vector;
    }
    for (int i = 0; i < size; i++) {
        temp[i * 3] = static_cast<unsigned char>(buff[i].x);
        temp[i * 3 + 1] = static_cast<unsigned char>(buff[i].y);
        temp[i * 3 + 2] = static_cast<unsigned char>(buff[i].z);
    }
    file.write((char *)temp, size * 3);

    if (file.fail()) {
        cerr << "Could not write data" << endl;
        return false;
    }

    file.clear();
    file.close();

    return true;
    delete[] buff;
    delete[] temp;
}

设置按钮后

Answer 4

您可以尝试使用此代码..

 new AlertDialog.Builder(this)
                .setTitle("Add new Title")
                .setMessage("Type Message here")
                .setPositiveButton("Add", (dialog, whichButton) -> {
                   // Onclick event Here
                })
                .setNegativeButton("Close",(dialog, i) -> {

                })
                .show();

AlertDialog在三星Galaxy s4中没有显示正面和负面按钮

更新

4 个答案: