src/com/ectrip/cyt/shield_home/LockLayer.java

package com.ectrip.cyt.shield_home;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.graphics.PixelFormat;
import android.os.Handler;
import android.os.Message;
import android.view.Gravity;
import android.view.View;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.ectrip.trips.check.R;
public class LockLayer {
    private static Activity mActivty;
    public WindowManager mWindowManager;
    private View mLockView;
    private LayoutParams mLockViewLayoutParams;
    public LockLayer(Activity act) {
        mActivty = act;
        init();
    }
    private void init(){
//        mWindowManager = (WindowManager) mActivty.getSystemService(Context.WINDOW_SERVICE);
        mWindowManager = (WindowManager) mActivty.getSystemService("window");
        mLockViewLayoutParams = new LayoutParams();
        mLockViewLayoutParams.width = LayoutParams.MATCH_PARENT;
        mLockViewLayoutParams.height = LayoutParams.MATCH_PARENT;
        //实现关键
        mLockViewLayoutParams.type = LayoutParams.TYPE_SYSTEM_ALERT;
        //apktool value，这个值具体是哪个变量还请网友帮忙
        mLockViewLayoutParams.flags = 1280;
//        mLockViewLayoutParams.flags =WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;
//        ad.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM); 
//		ad.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
    }
    public void lock() {
        if(mLockView!=null){
            mWindowManager.addView(mLockView, mLockViewLayoutParams);
        }
    }
    public void unlock() {
//        if(mWindowManager!=null){
//            mWindowManager.removeView(mLockView);  
//        } 
        if (mLockView != null)
        {
            if (mLockView.getParent() != null)
            {
                mWindowManager.removeView(mLockView);
            }
            mLockView = null;
        }
    }
    public void setLockView(View v){
        mLockView = v;
    }
    private MToast mCToast;
    public void setToast(Context context,CharSequence content, int duration){
        mCToast=MToast.makeText(context,content,duration);
        mCToast.show();
    }
    public static class MToast{
        public static MToast makeText(Context context, CharSequence text, int duration)
        {
            MToast result = new MToast(context);
            LinearLayout mLayout=new LinearLayout(context);
            TextView tv = new TextView(context);
            tv.setText(text);
            tv.setTextColor(Color.WHITE);
            tv.setGravity(Gravity.CENTER);
            mLayout.setBackgroundResource(R.drawable.toast_img);
            int w=context.getResources().getDisplayMetrics().widthPixels / 2;
            int h=context.getResources().getDisplayMetrics().widthPixels / 10;
            mLayout.addView(tv, w, h);
            result.mNextView = mLayout;
            result.mDuration = duration;
            return result;
        }
        public static final int LENGTH_SHORT = 0;
        public static final int LENGTH_LONG = 1;
        private int mDuration=LENGTH_SHORT;
        private int mGravity = Gravity.CENTER;
        private int mX, mY;
        private float mHorizontalMargin;
        private float mVerticalMargin;
        private View mView;
        private View mNextView;
        private final int SHOW=10;
        private final int HIDE=11;
        private Handler mHandler = new Handler(mActivty.getMainLooper()) {
            @Override
            public void handleMessage(Message msg) {
                switch (msg.what) {
                    case SHOW:
                        handleShow();
                        break;
                    case HIDE:
                        handleHide();
                        break;
                    default:
                        break;
                }
            }
        };
        private WindowManager mWM;
        private final WindowManager.LayoutParams mParams = new WindowManager.LayoutParams();
        public MToast(Context context) {
            init(context);
        }
        /**
         * Set the view to show.
         * @see #getView
         */
        public void setView(View view) {
            mNextView = view;
        }
        /**
         * Return the view.
         * @see #setView
         */
        public View getView() {
            return mNextView;
        }
        /**
         * Set how long to show the view for.
         * @see #LENGTH_SHORT
         * @see #LENGTH_LONG
         */
        public void setDuration(int duration) {
            mDuration = duration;
        }
        /**
         * Return the duration.
         * @see #setDuration
         */
        public int getDuration() {
            return mDuration;
        }
        /**
         * Set the margins of the view.
         *
         * @param horizontalMargin The horizontal margin, in percentage of the
         *        container width, between the container's edges and the
         *        notification
         * @param verticalMargin The vertical margin, in percentage of the
         *        container height, between the container's edges and the
         *        notification
         */
        public void setMargin(float horizontalMargin, float verticalMargin) {
            mHorizontalMargin = horizontalMargin;
            mVerticalMargin = verticalMargin;
        }
        /**
         * Return the horizontal margin.
         */
        public float getHorizontalMargin() {
            return mHorizontalMargin;
        }
        /**
         * Return the vertical margin.
         */
        public float getVerticalMargin() {
            return mVerticalMargin;
        }
        /**
         * Set the location at which the notification should appear on the screen.
         * @see android.view.Gravity
         * @see #getGravity
         */
        public void setGravity(int gravity, int xOffset, int yOffset) {
            mGravity = gravity;
            mX = xOffset;
            mY = yOffset;
        }
        /**
         * Get the location at which the notification should appear on the screen.
         * @see android.view.Gravity
         * @see #getGravity
         */
        public int getGravity() {
            return mGravity;
        }
        /**
         * Return the X offset in pixels to apply to the gravity's location.
         */
        public int getXOffset() {
            return mX;
        }
        /**
         * Return the Y offset in pixels to apply to the gravity's location.
         */
        public int getYOffset() {
            return mY;
        }
        /**
         * schedule handleShow into the right thread
         */
        public void show() {
//            mHandler.post(mShow);
            mHandler.sendEmptyMessage(SHOW);
            if(mDuration==LENGTH_SHORT)
            {
                new Thread(new Runnable(){
                    public void run(){
                        try {
                            Thread.sleep(2000);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                        mHandler.sendEmptyMessage(HIDE);
                    }
                }).start();
//                 mHandler.postDelayed(mHide, 2000);
            }else if(mDuration==LENGTH_LONG){
                new Thread(new Runnable(){
                    public void run(){
                        try {
                            Thread.sleep(3500);
                        } catch (InterruptedException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                        mHandler.sendEmptyMessage(HIDE);
                    }
                }).start();
//            	mHandler.postDelayed(mHide, 3500);
            }else{
                new Thread(new Runnable(){
                    public void run(){
                        try {
                            Thread.sleep(mDuration);
                        } catch (InterruptedException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                        mHandler.sendEmptyMessage(HIDE);
                    }
                }).start();
//            	mHandler.postDelayed(mHide,mDuration);
            }
        }
        /**
         * schedule handleHide into the right thread
         */
        public void hide() {
//            mHandler.post(mHide);
        }
//        private final Runnable mShow = new Runnable() {
//            public void run() {
//                handleShow();
//            }
//        };
//     
//        private final Runnable mHide = new Runnable() {
//            public void run() {
//                handleHide();
//            }
//        };
        private void init(Context context)
        {
            final WindowManager.LayoutParams params = mParams;
            params.height = WindowManager.LayoutParams.WRAP_CONTENT;
            params.width = WindowManager.LayoutParams.WRAP_CONTENT;
            params.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                    | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
                    | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
            params.format = PixelFormat.TRANSLUCENT;
            params.windowAnimations = android.R.style.Animation_Toast;
            params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;
            params.setTitle("Toast");
            mWM = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        }
        private void handleShow() {
            if (mView != mNextView) {
                // remove the old view if necessary
                handleHide();
                mView = mNextView;
//                mWM = WindowManagerImpl.getDefault();
                final int gravity = mGravity;
                mParams.gravity = gravity;
                if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.FILL_HORIZONTAL)
                {
                    mParams.horizontalWeight = 1.0f;
                }
                if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.FILL_VERTICAL)
                {
                    mParams.verticalWeight = 1.0f;
                }
                mParams.x = mX;
                mParams.y = mY;
                mParams.verticalMargin = mVerticalMargin;
                mParams.horizontalMargin = mHorizontalMargin;
                if (mView.getParent() != null)
                {
                    mWM.removeView(mView);
                }
                try {
                    if(mView!=null){
                        mWM.addView(mView, mParams);
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
        private void handleHide()
        {
            if (mView != null)
            {
                if (mView.getParent() != null)
                {
                    mWM.removeView(mView);
                }
                mView = null;
            }
        }
    }
}