Question

android类似群公告的滚动模块应该怎么实现

Answer 1

实现滚动栏里多条消息的自切换；
点击后获取具体内容。
简单是实现代码：
public class PublicNoticeView extends LinearLayout {

private static final String TAG = "LILITH";
private Context mContext;
private ViewFlipper viewFlipper;
private View scrollTitleView;
private Intent intent;

Handler mHandler = new Handler(){
@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
switch (msg.what) {
case 1:

//bindNotices();
break;

case -1:
break;
}
}
};

/**
* 构造
* @param context
*/
public PublicNoticeView(Context context) {
super(context);
mContext = context;
init();
}

public PublicNoticeView(Context context,AttributeSet attrs) {
super(context, attrs);
mContext = context;
init();

}

/**
* 网络请求后返回公告内容进行适配
*/
protected void bindNotices() {
// TODO Auto-generated method stub
viewFlipper.removeAllViews();
int i = 0;
while(i<5){
String text = "公告:中奖了 5000w-------";
TextView textView = new TextView(mContext);
textView.setText(text);
textView.setOnClickListener(new NoticeTitleOnClickListener(mContext,i+text));
LayoutParams lp = new LinearLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
viewFlipper.addView(textView,lp);
i++;
}
}

private void init(){
bindLinearLayout();
Message msg = new Message();
msg.what = 1;
mHandler.sendMessageDelayed(msg, 3000);

}

/**
* 初始化自定义的布局
*/
public void bindLinearLayout() {
scrollTitleView = LayoutInflater.from(mContext).inflate(
R.layout.main_public_notice_title, null);
LayoutParams layoutParams = new LinearLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
addView(scrollTitleView, layoutParams);

viewFlipper = (ViewFlipper) scrollTitleView
.findViewById(R.id.flipper_scrollTitle);
viewFlipper.setInAnimation(AnimationUtils.loadAnimation(mContext, android.R.anim.slide_in_left));
viewFlipper.setOutAnimation(AnimationUtils.loadAnimation(mContext, android.R.anim.slide_out_right));
viewFlipper.startFlipping();
View v = viewFlipper.getCurrentView();

}

/**
* 获取公告资讯
*/
public void getPublicNotices(){
//网络请求获取
}

/**
* 公告title监听
* @author Nono
*
*/
class NoticeTitleOnClickListener implements OnClickListener{
private Context context;
private String titleid;

public NoticeTitleOnClickListener(Context context, String whichText){
this.context = context;
this.titleid = whichText;
}
public void onClick(View v) {
// TODO Auto-generated method stub
disPlayNoticeContent(context,titleid);
}

}

/**
* 显示notice的具体内容
* @param context
* @param titleid
*/
public void disPlayNoticeContent(Context context, String titleid) {
// TODO Auto-generated method stub
Toast.makeText(context, titleid, Toast.LENGTH_SHORT).show();
intent = new Intent(context, InformationContentActivity.class);
intent.putExtra("tag", titleid);
((Activity)context).startActivity(intent);
}

}