今天竟然捣鼓出一小效果隐藏editView中的部分内容，这个主要利用了editView背景色和字体一个颜色这样就相当于以藏了又是一招欺骗，哎看来欺骗哪里都好用

EditText tx =(EditText)findViewById(R.id.txt);
        Spannable sText = (Spannable) tx.getText();
        sText.setSpan(new BackgroundColorSpan(0xFFFFFF00), 11,15, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        sText.setSpan(new BackgroundColorSpan(Color.TRANSPARENT), 5,10, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        sText.setSpan(new ForegroundColorSpan(Color.WHITE), 1,3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        sText.setSpan(new ForegroundColorSpan(Color.TRANSPARENT),16,17,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

2
  TextView tv = (TextView) findViewById(R.id.cctvex);
  tv.setText("Please visit my website, http://wang_peng1.iteye.com or email me at 3323297@qq.com.");
  Linkify.addLinks(tv, Linkify.ALL);

intent-filters填写

- android.net.wifi.WIFI_STATE_CHANGED
- action android:name="android.net.wifi.STATE_CHANGE
- android.net.wifi.supplicant.CONNECTION_CHANGE

权限

uses-permission android:name="android.permission.ACCESS_WIFI_STATE"

final String action = intent.getAction(); 
 
if (action.equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) 
{ 
  NetworkInfo info = (NetworkInfo)intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO); 
  if (info.getState().equals(NetworkInfo.State.CONNECTED)) 
  { 
    //do whatever you want when wifi is active and connected to a hotspot 
  } 
} 

还有这句如果需要

if (action.equals(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION))

public class HorizontalReversePinchDetector { 
 
    public boolean onTouchEvent(MotionEvent e) { 
 
        int pointerCount = e.getPointerCount(); 
 
        if(pointerCount != 2) { 
            Log.d(GESTURE, "not pinching - exactly 2 fingers are needed but have " + pointerCount); 
            clearPinch(); 
            return false; 
        } 
 
        int firstIndex = e.getX(0) < e.getX(1) ? 0: 1; 
        int secondIndex = e.getX(0) < e.getX(1) ? 1: 0; 
 
        Finger currentLeftFinger = new Finger(e.getX(firstIndex), e.getY(firstIndex)); 
        Finger currentRightFinger = new Finger(e.getX(secondIndex), e.getY(secondIndex)); 
 
        float yDifference = Math.abs(currentLeftFinger.getY() - currentRightFinger.getY()); 
        if(yDifference > 80) { 
            Log.d(GESTURE, "not pinching - fingers too vertically-oriented"); 
            clearPinch(); 
            return false; 
        } 
 
        if(initialLeftFinger == null) { 
            initialLeftFinger = currentLeftFinger; 
            initialRightFinger = currentRightFinger; 
            Log.d(GESTURE, "not pinching, but might be starting a pinch..."); 
            return false; 
        } 
 
        float leftFingerDistance = initialLeftFinger.getX() - currentLeftFinger.getX(); 
        float rightFingerDistance = currentRightFinger.getX() - initialRightFinger.getX(); 
 
        float xDistanceBetweenFingers = Math.abs(currentLeftFinger.getX() - currentRightFinger.getX()); 
        if(xDistanceBetweenFingers < minimumDistanceBetweenFingers) { 
            Log.d(GESTURE, "pinching, but fingers are not far enough apart..."); 
            return true; 
        } 
 
        if(leftFingerDistance < minimumDistanceForEachFinger) { 
            Log.d(GESTURE, "pinching, but left finger has not moved enough..."); 
            return true; 
        } 
        if(rightFingerDistance < minimumDistanceForEachFinger) { 
            Log.d(GESTURE, "pinching, but right finger has not moved enough..."); 
            return true; 
        } 
 
        pinchCompleted(); 
        return true; 
    } 
 
    private void pinchCompleted() { 
        Log.d(GESTURE, "pinch completed"); 
        if(pinchListener != null) pinchListener.onPinch(); 
        clearPinch(); 
    } 
 
    public static interface OnPinchListener { 
        void onPinch(); 
    } 
 
    private void clearPinch() { 
        initialLeftFinger = null; 
        initialRightFinger = null; 
    } 
 
    public void setPinchListener(OnPinchListener pinchListener) { 
        this.pinchListener = pinchListener; 
    } 
 
    private static class Finger { 
 
        private Finger(float x, float y) { 
            this.x = x; 
            this.y = y; 
        } 
 
        public float getX() { 
            return x; 
        } 
 
        public float getY() { 
            return y; 
        } 
 
        private float x; 
        private float y; 
    } 
 
    private Finger initialLeftFinger; 
    private Finger initialRightFinger; 
    private OnPinchListener pinchListener; 
    private static final float minimumDistanceForEachFinger = 30; 
    private static final float minimumDistanceBetweenFingers = 50; 
}