android5.0自带兼容控件__SwipeRefreshLayout

SwipeRefreshLayout

http://blog.csdn.net/Rozol/article/details/50256743

http://weibo.com/u/2524456400

基本使用

<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipe"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<android.support.v7.widget.RecyclerView
android:id="@+id/recycler"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.SwipeRefreshLayout>

public class SwipeRefreshLayoutDemo extends Activity implements OnRefreshListener {
private SwipeRefreshLayout refreshLayout;
private RecyclerView recycler;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_swipe);
initView();
initData();
}

private void initView() {
refreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipe);
recycler = (RecyclerView) findViewById(R.id.recycler);
}

private void initData() {
// 下拉刷新
refreshLayout.setOnRefreshListener(this); // 设置刷新监听
refreshLayout.setColorSchemeResources(R.color.orange, R.color.green, R.color.purple); // 进度动画颜色
refreshLayout.setProgressBackgroundColorSchemeResource(R.color.swipefefresh_bg); // 进度背景颜色

// RecycleView
GridLayoutManager layoutManager = new GridLayoutManager(this,3);
layoutManager.setOrientation(RecyclerView.VERTICAL);
recycler.setLayoutManager(layoutManager);
recycler.setAdapter(new GridAdapter(this,true));
}

@Override
public void onRefresh() {
refreshLayout.postDelayed(new Runnable() { // 发送延迟消息到消息队列
@Override
public void run() {
refreshLayout.setRefreshing(false); // 是否显示刷新进度;false:不显示
}
},3000);
}
}

源码研究

Code方法研究:

public class SwipeRefreshLayout extends ViewGroup implements NestedScrollingParent, NestedScrollingChild {
public static final int LARGE = MaterialProgressDrawable.LARGE; //ProgressBar style

public void setProgressViewOffset(boolean scale, int start, int end) { } //设置滚动View位置,一般在刚打开界面时才用 [scale:true测量;start/end偏移量] {重要}
public void setProgressViewEndTarget(boolean scale, int end) { } //设置滚动View休息位置 [scale:true测量;end偏移量]
public void setSize(int size) { } //大小(样式) [LARGE/DEFAULT] {重要}
public void setOnRefreshListener(OnRefreshListener listener) { } //设置下拉刷新 {重要}
public void setRefreshing(boolean refreshing) { } //是否显示刷新进度:true显示/false隐藏 {重要}
public void setProgressBackgroundColorSchemeResource(@ColorRes int colorRes) { } //刷新进度背景颜色 {重要}
public void setProgressBackgroundColorSchemeColor(@ColorInt int color) { }
public void setColorSchemeResources(@ColorRes int... colorResIds) { } //刷新进度颜色 {重要}
public void setColorSchemeColors(int... colors) { }
public boolean isRefreshing() { } //是否在刷新
public void setDistanceToTriggerSync(int distance) { } //手指滑动多少距离后刷新进度同步下降
public int getProgressCircleDiameter() { } // 获取刷新进度圆的直径
public boolean canChildScrollUp() { } //布局可以向上滚动,Override这个方法

public interface OnRefreshListener {
public void onRefresh();
}
}

案例源代码:

GitHub