Java 安卓警报对话框和设置积极按钮

这是一个滑块拼图。当拼图完成时，我想显示一个带有OK按钮的对话框。当按下OK按钮时，我使用

Intent

通过Android浏览器加载网站。唯一的问题是，对于当前代码，当拼图完成时，它不会加载一个框（当我使用

null

时会加载）。它没有任何作用。有什么想法吗

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(!puzzle.isSolved() ? R.string.title_stats : stats.isNewBest() ? R.string.title_new_record : R.string.title_solved);
builder.setMessage(msg);
builder.setPositiveButton(R.string.label_ok, new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int id) {
        Intent intent = new Intent("android.intent.action.VIEW", Uri.parse("http://www..com"));
        Bundle b = new Bundle();
        b.putBoolean("new_window", true); //sets new window
        intent.putExtras(b);
        startActivity(intent);
     }
});

---

添加以下代码以显示该对话框

AlertDialog alert = builder.create();
alert.show();

---

试试这个，检查下面的代码。这可能对你有帮助

AlertDialog alertDialog = new AlertDialog.Builder(
                GeneralClassPhotoCaptureImageVideo.this).create(); // Read
                                                                    // Update
        alertDialog.setTitle("Title of dialog");
        alertDialog
                .setMessage("contents");
        alertDialog.setButton(Dialog.BUTTON_POSITIVE, "Ok",
                new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // TODO Auto-generated method stub
                      Intent intent = new Intent("android.intent.action.VIEW", Uri.parse("http://www..com"));
    Bundle b = new Bundle();
    b.putBoolean("new_window", true); //sets new window
    intent.putExtras(b);
    startActivity(intent);
                    }


                });
        alertDialog.setButton(Dialog.BUTTON_NEGATIVE, "Cancel",
                new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // TODO Auto-generated method stub


                    }
                });
        alertDialog.show();

---

是否已调用

builder.show（）

以显示对话框？添加代码以显示警报框。您说过“它不加载一个框（当我使用null时是这样）”用code.AlertDialog.Builder=new AlertDialog.Builder（this）解释这一点；builder.setTitle（！puzzle.isSolved（）？R.string.title_stats:stats.isNewBest（）？R.string.title_new_record:R.string.title_solved）；builder.setMessage（msg）；builder.setPositiveButton（R.string.label_ok，null）；使用此代码将显示对话框

AlertDialog alertDialog = new AlertDialog.Builder(
                GeneralClassPhotoCaptureImageVideo.this).create(); // Read
                                                                    // Update
        alertDialog.setTitle("Title of dialog");
        alertDialog
                .setMessage("contents");
        alertDialog.setButton(Dialog.BUTTON_POSITIVE, "Ok",
                new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // TODO Auto-generated method stub
                      Intent intent = new Intent("android.intent.action.VIEW", Uri.parse("http://www..com"));
    Bundle b = new Bundle();
    b.putBoolean("new_window", true); //sets new window
    intent.putExtras(b);
    startActivity(intent);
                    }


                });
        alertDialog.setButton(Dialog.BUTTON_NEGATIVE, "Cancel",
                new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // TODO Auto-generated method stub


                    }
                });
        alertDialog.show();