最近流行歌曲,霍邱县邮编,哈工大李璐
最近需要用到微信的标签功能（如下图所示）。该功能可以添加已有标签，也可以自定义标签。也可以删除已编辑菜单。研究了一番。发现还是挺有意思的，模拟实现相关功能。
该功能使用类似flowlayout的功能。flowlayout为一个开源软件（https://github.com/apmem/android-flowlayout ），功能为自动换行的布局类型
我要评论
import android.content.context;
import android.util.attributeset;
import android.view.view;
import android.view.viewgroup;
/**
*
* @author raw
*/
public class flowlayout extends viewgroup {
private final static int pad_h = 2, pad_v = 2; // space between child views.
private int mheight;
public flowlayout(context context) {
super(context);
}
public flowlayout(context context, attributeset attrs) {
super(context, attrs);
}
@override
protected void onmeasure(int widthmeasurespec, int heightmeasurespec) {
assert (measurespec.getmode(widthmeasurespec) != measurespec.unspecified);
final int width = measurespec.getsize(widthmeasurespec) - getpaddingleft() - getpaddingright();
int height = measurespec.getsize(heightmeasurespec) - getpaddingtop() - getpaddingbottom();
final int count = getchildcount();
int xpos = getpaddingleft();
int ypos = getpaddingtop();
int childheightmeasurespec;
if(measurespec.getmode(heightmeasurespec) == measurespec.at_most)
childheightmeasurespec = measurespec.makemeasurespec(height, measurespec.at_most);
else
childheightmeasurespec = measurespec.makemeasurespec(0, measurespec.unspecified);
mheight = 0;
for(int i = 0; i < count; i++) {
final view child = getchildat(i);
if(child.getvisibility() != gone) {
child.measure(measurespec.makemeasurespec(width, measurespec.at_most), childheightmeasurespec);
final int childw = child.getmeasuredwidth();
mheight = math.max(mheight, child.getmeasuredheight() + pad_v);
if(xpos + childw > width) {
xpos = getpaddingleft();
ypos += mheight;
}
xpos += childw + pad_h;
}
}
if(measurespec.getmode(heightmeasurespec) == measurespec.unspecified) {
height = ypos + mheight;
} else if(measurespec.getmode(heightmeasurespec) == measurespec.at_most) {
if(ypos + mheight < height) {
height = ypos + mheight;
}
}
height += 5; // fudge to avoid clipping bottom of last row.
setmeasureddimension(width, height);
} // end onmeasure()
@override
protected void onlayout(boolean changed, int l, int t, int r, int b) {
final int width = r - l;
int xpos = getpaddingleft();
int ypos = getpaddingtop();
for(int i = 0; i < getchildcount(); i++) {
final view child = getchildat(i);
if(child.getvisibility() != gone) {
final int childw = child.getmeasuredwidth();
final int childh = child.getmeasuredheight();
if(xpos + childw > width) {
xpos = getpaddingleft();
ypos += mheight;
}
child.layout(xpos, ypos, xpos + childw, ypos + childh);
xpos += childw + pad_h;
}
}
} // end onlayout()
}
以上所述是小编给大家介绍的android模仿微信收藏文件的标签处理功能，希望对大家有所帮助
如对本文有疑问，请在下面进行留言讨论，广大热心网友会与你互动！！ 点击进行留言回复
Android studio开发小型对话机器人app(实例代码)
Android通过Java sdk的方式接入OpenCv的方法
Android 通过cmake的方式接入opencv的方法步骤
Android Studio finish()方法的使用与解决app点击“返回”(直接退出)
Android 进度条 ProgressBar的实现代码(隐藏、出现、加载进度)
网友评论