可以锚定的Toast
由于项目的需要，要求做一个提示框，这个提示框需要在某个控件的下方做出一个提示，并具有动画特效。实现 · 功能定位：本功能需要实现的是，每一个提示都需要加入队列中。· 类图 · · 1. ToastManager:用于管理Member类，里面有个队列。用于有提示请求的时候，添加到队列中，以先到先提示的原则进行提示。
2. ToastRunable:用于执行Member的方法。该方法从队列中读取Member，并执行show方法，读完为止。
3. Member:显示提示。使用PopWindows实现。 · 实现（似乎实现有点不一样）
public class PdToast {
public static final int ID = 10256;
private PopupWindow mWin;
private View mAnchor;
private View mRootView;
private Context mContext;
private long mDuration = 1000 * 3;
private Queue<Member> mQueue;
private boolean mIsStart = false;
private boolean mStop = false;
private Handler mHandler = new Handler();
private boolean DEBUG = false;
private PdToast(Context context) {
this.mWin = new PopupWindow(context.getApplicationContext());
this.mQueue = new LinkedList<Member>();
}
public void show(String text, View anchor) {
this.mAnchor = anchor;
Member m = new Member(text);
this.mQueue.offer(m);
start();
}
private void start() {
if (!mIsStart) {
mIsStart = true;
mStop = false;
new Thread(mShowQueueRunable).start();
}
}
private Runnable mShowQueueRunable = new Runnable() {
public void run() {
while (!mStop) {
try {
Member m = mQueue.poll();
if (null == m) {
break;
}
if (DEBUG)
Log.v("PDTOAST", "GET MEMEBER");
m.doShow();
Thread.sleep(mDuration);
m.doHide();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
if (DEBUG)
Log.v("PDTOAST", "STOP");
mIsStart = false;
}
};
public void setAnimationStyle(int animationStyle) {
this.mWin.setAnimationStyle(animationStyle);
}
public void setContentView(int layoutId) {
LayoutInflater inflator = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
setContentView(inflator.inflate(layoutId, null));
}
public void setAnchor(View view) {
this.mAnchor = view;
}
public void setContentView(View root) {
mRootView = root;
mWin.setContentView(root);
}
public static PdToast make(Context context, View root, int animationStyle) {
PdToast pd = new PdToast(context);
pd.setAnimationStyle(animationStyle);
pd.setContentView(root);
return pd;
}
private void preShow(String text) {
mWin.setWidth(WindowManager.LayoutParams.WRAP_CONTENT);
mWin.setHeight(WindowManager.LayoutParams.WRAP_CONTENT);
TextView tv = (TextView) this.mRootView.findViewById(ID);
tv.setText(text);
}
private void show() {
mWin.showAsDropDown(mAnchor);
}
public void cancel() {
mWin.dismiss();
mStop = true;
}
private class Member {
private String mContent;
private final Runnable mShowR = new Runnable() {
public void run() {
if (mAnchor == null)
return;
Log.v("PDTOAST", "SHOW MEMEBER");
preShow(mContent);
show();
}
};
private final Runnable mHideR = new Runnable() {
public void run() {
mWin.dismiss();
}
};
public Member(String text) {
this.mContent = text;
}
public void doShow() {
mHandler.post(mShowR);
}
public void doHide() {
mHandler.post(mHideR);
}
}
}
private PdToast mToast;
TextView mAnchorView =new TextView(this);
mAnchorView.setId(PdToast.Id);
// 该方法实例化一个Member对象，添加到队列中。
//必须确保Activity的存在。建议在onPause()中执行mToast.cancel();方法。
mToast.show(content, mAnchorView);
页:
[1]