Menu的使用

 

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.lost_menu, menu); //在res目錄下建一menu文件夾，建一lost_menu.xml
        return true;
    }
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle item selection
        switch (item.getItemId()) {
            case R.id.item_change_name:
                AlertDialog.Builder builder = new Builder(LostProtectedActivity.this);
                builder.setTitle("請輸入標題名稱");
                final EditText et = new EditText(this);
                builder.setView(et);
                builder.setPositiveButton("確定", new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int which) {
                        String name = et.getText().toString().trim();
                        Editor editor = sp.edit();
                        editor.putString("newname", name);
                        editor.commit();
                    }
                });
                builder.create().show();
                return true;
        }
        return false;
    }