Androidを上下にスクロールするtextview(サイト公告として利用可能)
25551 ワード
:
public class VerticalTextview extends TextSwitcher implements ViewSwitcher.ViewFactory {
private static final int FLAG_START_AUTO_SCROLL = 0;
private static final int FLAG_STOP_AUTO_SCROLL = 1;
private float mTextSize = 16 ;
private int mPadding = 5;
private int textColor = Color.BLACK;
/**
* @param textSize
* @param padding
* @param textColor
*/
public void setText(float textSize,int padding,int textColor) {
mTextSize = textSize;
mPadding = padding;
this.textColor = textColor;
}
private OnItemClickListener itemClickListener;
private Context mContext;
private int currentId = -1;
private ArrayList textList;
private Handler handler;
public VerticalTextview(Context context) {
this(context, null);
mContext = context;
}
public VerticalTextview(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
textList = new ArrayList();
}
public void setAnimTime(long animDuration) {
setFactory(this);
Animation in = new TranslateAnimation(0, 0, animDuration, 0);
in.setDuration(animDuration);
in.setInterpolator(new AccelerateInterpolator());
Animation out = new TranslateAnimation(0, 0, 0, -animDuration);
out.setDuration(animDuration);
out.setInterpolator(new AccelerateInterpolator());
setInAnimation(in);
setOutAnimation(out);
}
/**
*
* @param time
*/
public void setTextStillTime(final long time){
handler =new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case FLAG_START_AUTO_SCROLL:
if (textList.size() > 0) {
currentId++;
setText(textList.get(currentId % textList.size()));
}
handler.sendEmptyMessageDelayed(FLAG_START_AUTO_SCROLL,time);
break;
case FLAG_STOP_AUTO_SCROLL:
handler.removeMessages(FLAG_START_AUTO_SCROLL);
break;
}
}
};
}
/**
*
* @param titles
*/
public void setTextList(ArrayList titles) {
textList.clear();
textList.addAll(titles);
currentId = -1;
}
/**
*
*/
public void startAutoScroll() {
handler.sendEmptyMessage(FLAG_START_AUTO_SCROLL);
}
/**
*
*/
public void stopAutoScroll() {
handler.sendEmptyMessage(FLAG_STOP_AUTO_SCROLL);
}
@Override
public View makeView() {
TextView t = new TextView(mContext);
t.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);
t.setMaxLines(1);
t.setPadding(mPadding, mPadding, mPadding, mPadding);
t.setTextColor(textColor);
t.setTextSize(mTextSize);
t.setClickable(true);
t.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (itemClickListener != null && textList.size() > 0 && currentId != -1) {
itemClickListener.onItemClick(currentId % textList.size());
}
}
});
return t;
}
/**
*
* @param itemClickListener
*/
public void setOnItemClickListener(OnItemClickListener itemClickListener) {
this.itemClickListener = itemClickListener;
}
/**
*
*/
public interface OnItemClickListener {
/**
*
* @param position ID
*/
void onItemClick(int position);
}
}
Activityでの参照
private void init() {
mTextview = (VerticalTextview) findViewById(R.id.textview);
titleList=new ArrayList<>();
titleList.add(" 1");
titleList.add(" 2");
titleList.add(" 3");
titleList.add(" 4");
titleList.add(" 5");
titleList.add(" 6");
titleList.add(" 7");
titleList.add(" 8");
mTextview.setTextList(titleList);
mTextview.setText(14, 5, Color.RED);//
mTextview.setTextStillTime(3000);//
mTextview.setAnimTime(300);//
mTextview.setOnItemClickListener(new VerticalTextview.OnItemClickListener() {
@Override
public void onItemClick(int position) {
Toast.makeText(MainActivity.this, " : " + titleList.get(position), Toast.LENGTH_SHORT).show();
}
});
}
@Override
protected void onResume() {
super.onResume();
mTextview.startAutoScroll();
}
@Override
protected void onPause() {
super.onPause();
mTextview.stopAutoScroll();
}