android 如何优雅地给Activity和Fragement传入参数

传参给Fragment

public class MyFragment extends Fragment {    private static final String ARGS_KEY = "ARGS_KEY";    private int mKey = -1;    public static MyFragment newInstance(int type) {        Bundle args = new Bundle();        args.putInt(ARGS_KEY, type);        MyFragment fragment = new MyFragment();        fragment.setArguments(args);        return fragment;    }    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        View root = inflater.inflate(R.layout.xxx, container, false);        mKey = getArguments().getInt(ARGS_KEY);        return root;    }}

usgage: MyFragment myFragment = MyFragment.newInstance(123);

传参给Activity

public class ActivityOne extends Activity {    private static final String VALUE1 = "value1_param";    private static final String VALUE2 = "value2_param";    public static void startMe( Context ctx, int val1, String val2 )    {        Intent intent = new Intent( ctx, ActivityOne.class );        intent.putExtra( VALUE1, val1 );        intent.putExtra( VALUE2, val2 );        ctx.startActivity( intent );    }    private int _value1;    private String _value2;    @Override    protected void onCreate(Bundle savedInstanceState)    {        super.onCreate( savedInstanceState );        setContentView( R.layout.activity_one );        Bundle extras = getIntent().getExtras();        if ( extras != null )        {            _value1 = extras.getInt( VALUE1 );            _value2 = extras.getString( VALUE2 );        }    }}

usgage: ActivityOne.startMe( this, 123, "abc" );

传参给Fragment

传参给Activity

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