[ Android Studio ] SQLite之ListView點擊出現刪除對話框

最下面有影片教學。

相關元件有

FragmentTransaction 片段交易

Fragment 片段

DialogFragment 對話框片段

ListView點擊語法：

FragmentTransaction ft=getFragmentManager().beginTransaction();
Fragment prev=getFragmentManager().findFragmentByTag("dialog");
if(prev !=null){
    ft.remove(prev);
}
ft.addToBackStack(null);
TextView te1=(TextView)view.findViewById(R.id.text1);
YNDialog newFragment=YNDialog.newInstance(te1.getText().toString());
newFragment.show(ft,"dialog");

對話框語法：

public class YNDialog extends DialogFragment {

    private String id_del;

    public Dialog onCreateDialog(Bundle bundle){
        id_del=getArguments().getString("id");
        AlertDialog.Builder builder =new AlertDialog.Builder(getActivity());
        builder.setTitle(id_del+"資料是否刪除?");
        builder.setPositiveButton("取消", new DialogInterface.OnClickListener() {
            @Override            public void onClick(DialogInterface dialog, int which) {
                //無動作            }
        }).setNegativeButton("刪除", new DialogInterface.OnClickListener() {
            @Override            public void onClick(DialogInterface dialog, int which) {
               SQLite2 del_sqlite2=(SQLite2)getActivity();
               del_sqlite2.del(id_del);
               del_sqlite2.select();
            }
        });

        return builder.create();
    }
    static  YNDialog newInstance(String id){
        YNDialog frag =new YNDialog();
        Bundle args=new Bundle();
        args.putString("id",id);
        frag.setArguments(args);
        return frag;
    }

教學影片：