Android 监听浏览器历史最后一页

Question

我得到了浏览器的历史记录，但只想得到访问过的页面的信息，下面是我的代码，同样我想听到新添加的 phone 图书联系人

public class HistoryObserver extends ContentObserver {

    public final String TAG = "HistoryObserver";

    public HistoryObserver(Handler handler) {
        super(handler);
        Log.d(TAG, "Creating new HistoryObserver");``
    }

    public HistoryObserver() {
        super(null);
        Log.d(TAG, "Creating a new HistoryObserver without a Handler");
    }

    @Override
    public boolean deliverSelfNotifications() {
        Log.d(TAG, "delivering self notifications");
        return true;
    }

    @Override
    public void onChange(boolean selfChange) {
        super.onChange(selfChange);
        Log.d(TAG, "onChange without uri: " + selfChange);
        //onChange(selfChange, null);
    }

    @SuppressLint("NewApi") public void onChange(boolean selfChange, Uri uri) {
        super.onChange(selfChange, uri);
        Log.d(TAG, "onChange: " + selfChange + "\t " + uri.toString());

        String[] proj = new String[] { Browser.BookmarkColumns.TITLE, Browser.BookmarkColumns.URL,Browser.BookmarkColumns.DATE };
        String selection = Browser.BookmarkColumns.BOOKMARK + " = 0"; // 0 = history, 1 = bookmark
        Cursor mCursor = getContentResolver().query(Browser.BOOKMARKS_URI, proj, selection, null, null);
        //this.startManagingCursor(mCursor);
        mCursor.moveToFirst();
       int count= mCursor.getColumnCount();
      String COUNT=String.valueOf(count);
        Log.e("Browser sayac", COUNT);

        String title = "";
        String url = "";
        String date="";
        if (mCursor.moveToFirst() && mCursor.getCount() > 0) {

            while (mCursor.isAfterLast() == false) {

                title = mCursor.getString(mCursor.getColumnIndex(Browser.BookmarkColumns.TITLE ));
                url = mCursor.getString(mCursor.getColumnIndex(Browser.BookmarkColumns.URL));
                 date =  mCursor.getString(mCursor.getColumnIndex(Browser.BookmarkColumns.DATE));
                 Long timestamp = Long.parseLong(date);  

              SimpleDateFormat dateFormat = new SimpleDateFormat( "dd/MM/yyyy/HH:mm");
              Calendar calendar = Calendar.getInstance();
              calendar.setTimeInMillis(timestamp);
            String  finaldate = dateFormat.format(calendar.getTime());
              String smsDate = finaldate.toString();

                // Log.e("DTE", date);
                    Log.e("URL",title  );

                    Log.e("TARIH", smsDate);
                mCursor.moveToNext();
            }
        }
    }
}

Answer 1

由于您使用的是 ContentObserver，我猜您想要的是获取上次访问的页面。该过程几乎相同，只是您只需使用 moveToLast() 方法将光标指向最后一个位置。

 @SuppressLint("NewApi") public void onChange(boolean selfChange, Uri uri) {
    super.onChange(selfChange, uri);
    Log.d(TAG, "onChange: " + selfChange + "\t " + uri.toString());

    String[] proj = new String[] { Browser.BookmarkColumns.TITLE, Browser.BookmarkColumns.URL,Browser.BookmarkColumns.DATE };
    String selection = Browser.BookmarkColumns.BOOKMARK + " = 0"; // 0 = history, 1 = bookmark
    Cursor mCursor = getContentResolver().query(Browser.BOOKMARKS_URI, proj, selection, null, null);
    //this.startManagingCursor(mCursor);
    mCursor.moveToLast();
   int count= mCursor.getColumnCount();
  String COUNT=String.valueOf(count);
    Log.e("Browser sayac", COUNT);

            String title = mCursor.getString(mCursor.getColumnIndex(Browser.BookmarkColumns.TITLE ));
            String url = mCursor.getString(mCursor.getColumnIndex(Browser.BookmarkColumns.URL));
             String date =  mCursor.getString(mCursor.getColumnIndex(Browser.BookmarkColumns.DATE));
             Long timestamp = Long.parseLong(date);  

          SimpleDateFormat dateFormat = new SimpleDateFormat( "dd/MM/yyyy/HH:mm");
          Calendar calendar = Calendar.getInstance();
          calendar.setTimeInMillis(timestamp);
        String  finaldate = dateFormat.format(calendar.getTime());
          String smsDate = finaldate.toString();

            // Log.e("DTE", date);
                Log.e("URL",title  );

                Log.e("TARIH", smsDate);



}

当然，您需要注册 ContentObserver 才能正常工作。我建议你使用后台服务来注册观察者。

       private BrowserObserver browserObserver;
      browserObserver = new BrowserObserver(new Handler(), getBaseContext());
                        getApplicationContext().getContentResolver().registerContentObserver(Browser.BOOKMARKS_URI, true, browserObserver);

并且不要忘记在您的清单中添加此权限

Answer 2

改为

//add thread.sleep to delay the action because sometimes it takes around a second before the page history is added. you can use other delaying techniques though
try {
    Thread.sleep(1500);
} catch (InterruptedException e) {
    e.printStackTrace();
}

Cursor mCursor = getContentResolver().query(Browser.BOOKMARKS_URI, proj, selection, null, null);
//this.startManagingCursor(mCursor);
mCursor.moveToFirst(); // instead of movetolast

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