滑动返回－SwipeBackLayout

源码片段

public class DemoActivity extends SwipeBackActivity implements View.OnClickListener {

    private int [] mBgColors;

    private static int mBgIndex = 0 ;

    private String mKeyTrackingMode;

    private RadioGroup mTrackingModeGroup;

    private SwipeBackLayout mSwipeBackLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super .onCreate(savedInstanceState);
        setContentView(R.layout.activity_demo);
        changeActionBarColor();
        findViews();
        mKeyTrackingMode = getString(R.string.key_tracking_mode);
        mSwipeBackLayout = getSwipeBackLayout();

        mTrackingModeGroup.setOnCheckedChangeListener( new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                int edgeFlag;
                switch (checkedId) {
                    case R.id.mode_left:
                        edgeFlag = SwipeBackLayout.EDGE_LEFT;
                        break ;
                    case R.id.mode_right:
                        edgeFlag = SwipeBackLayout.EDGE_RIGHT;
                        break ;
                    case R.id.mode_bottom:
                        edgeFlag = SwipeBackLayout.EDGE_BOTTOM;
                        break ;
                    default :
                        edgeFlag = SwipeBackLayout.EDGE_ALL;
                }
                mSwipeBackLayout.setEdgeTrackingEnabled(edgeFlag);
                saveTrackingMode(edgeFlag);
            }
        });
    }