自定义全局通知WindowToast

骑猪看日落 2022-07-20 15:16 170阅读 0赞

# 自定义全局通知WindowToast #

### 通过Window的方式来显示的。将WindowManager.LayoutParams的属性通过状态模式封装，可以降低耦合，根据需求变化，通过WindowToast.makeWindowToast()方法重载，可以通过自定义的布局制定样式。 ###

### WindowToast是采用单例模式设计，有好有坏。采用链式编程的形式，易于使用。 ###

### 效果图（在模拟器上截的图，和真机有差距） ###

## ![这里写图片描述][20160708143517026] ##

WindowToast.class

public class WindowToast { 
    
        private static WindowToast result;
        public final Context mContext;
        private static View sView;
    
        public WindowManager mWManager;
        public WindowManager.LayoutParams mParams;
        private final Handler mHandler = new Handler();
        private final Runnable mShow = new Runnable() {
            @Override
            public void run() {
                handleShow();
            }
        };
    
        private final Runnable mHide = new Runnable() {
            @Override
            public void run() {
                handleHide();
            }
        };
        /** * @by zhiqiang 2016/7/5 显示的时长 */
        public static final int SHORT_TIME = 1500;
        public static final int LONG_TIME = 3000;
    
        private static State state;
    
        private static SparseArray<View> sparseArray = new SparseArray<>();
    
        private WindowToast(Context context) {
            mContext = context;
            mWManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
            mParams = new WindowManager.LayoutParams();
            state = new NotifyState();
            setState(state);
        }
    
        public static WindowToast getInstance(Context context) {
            if (result == null) {
                synchronized (WindowToast.class) {
                    if (result == null) {
                        result = new WindowToast(context);
                    }
                }
            }
            return result;
        }
    
        /** * @by zhiqiang 2016/7/4 获取windowToast对象 */
        public static WindowToast makeWindowToast(Context context) {
            context = context.getApplicationContext();
            result = getInstance(context);
            if (sView == null) {
                sView = LayoutInflater.from(context).inflate(R.layout.window_toast, null);
            }
            return result;
        }
    
        public static WindowToast makeWindowToast(Context context, @LayoutRes int layout) {
            context = context.getApplicationContext();
            result = getInstance(context);
            if (sView == null) {
                sView = LayoutInflater.from(context).inflate(layout, null);
            }
            return result;
        }
    
        public static WindowToast makeWindowToast(Context context, @NonNull View view) {
            context = context.getApplicationContext();
            result = getInstance(context);
            if (sView == null) {
                sView = view;
            }
            return result;
        }
    
        public WindowToast setState(State state) {
            mParams = state.getParams();
            return result;
        }
    
        public void show() {
            mHandler.post(mShow);
        }
    
        public void show(int duration) {
            show();
            mHandler.removeCallbacks(mHide);
            mHandler.postDelayed(mHide, duration);
        }
    
        public void cancle() {
            mHandler.post(mHide);
        }
    
        private void handleShow() {
            if (sView != null) {
                if (sView.getParent() == null) {
                    mWManager.addView(sView, mParams);
                }
            }
        }
    
    
        private void handleHide() {
            if (sView != null) {
                if (sView.getParent() != null) {
                    sparseArray.clear();
                    mWManager.removeView(sView);
                }
                sView = null;
            }
        }
    
        /** * @by zhiqiang 2016/7/4 通过id获取子控件 */
    
        public <T extends View> T getChildView(@IdRes int id) {
            if (sView == null) return null;
            View view = sparseArray.get(id);
            if (view == null) {
                view = sView.findViewById(id);
                sparseArray.put(id, view);
            }
            return (T) view;
        }
    
        public WindowToast setPadding(int left, int top, int right, int bottom) {
            View view = getChildView(R.id.window_toast_tv);
            if (view != null) {
                view.setPadding(left, top, right, bottom);
            }
            return result;
        }
    
        /** * @by zhiqiang 2016/7/4 给相应的子控件设置属性 */
        public WindowToast setVisiable(int visibility) {
            View view = getChildView(R.id.window_toast_tv);
            if (view != null) {
                view.setVisibility(visibility);
            }
            return result;
        }
    
        public WindowToast setVisiable(@IdRes int id, int visibility) {
            View view = getChildView(id);
            if (view != null) {
                view.setVisibility(visibility);
            }
            return result;
        }
    
        public WindowToast setBackgroundColor(@IdRes int id, @ColorInt int color) {
            View view = getChildView(id);
            if (view != null) {
                view.setBackgroundColor(color);
            }
            return result;
        }
    
        public WindowToast setBackgroundResource(@IdRes int id, @DrawableRes int resId) {
            View view = getChildView(id);
            if (view != null) {
                view.setBackgroundResource(resId);
            }
            return result;
        }
    
        public WindowToast setBackground(@IdRes int id, @ColorInt Drawable drawable) {
            View view = getChildView(id);
            if (view != null) {
                view.setBackground(drawable);
            }
            return result;
        }
    
        public WindowToast setText(@NonNull CharSequence charSequence) {
            TextView view = getChildView(R.id.window_toast_tv);
            if (view != null) {
                view.setText(charSequence);
            }
            return result;
        }
    
        public WindowToast setText(@StringRes int string) {
            TextView view = getChildView(R.id.window_toast_tv);
            if (view != null) {
                view.setText(mContext.getString(string));
            }
            return result;
        }
    
        public WindowToast setText(@IdRes int id, @NonNull CharSequence charSequence) {
            TextView view = getChildView(id);
            if (view != null) {
                view.setText(charSequence);
            }
            return result;
        }
    
        public WindowToast setText(@IdRes int id, @StringRes int string) {
            TextView view = getChildView(id);
            if (view != null) {
                view.setText(mContext.getString(string));
            }
            return result;
        }
    
        public WindowToast setTextColor(@ColorInt int color) {
            TextView view = getChildView(R.id.window_toast_tv);
            if (view != null) {
                view.setTextColor(color);
            }
            return result;
        }
    
        public WindowToast setTextColor(@IdRes int id, @ColorInt int color) {
            TextView view = getChildView(id);
            if (view != null) {
                view.setTextColor(color);
            }
            return result;
        }
    
        public WindowToast setImageResource(@IdRes int id, @DrawableRes int resId) {
            ImageView view = getChildView(id);
            if (view != null) {
                view.setImageResource(resId);
            }
            return result;
        }
    
        public WindowToast setImageBitmap(@IdRes int id, Bitmap bitmap) {
            ImageView view = getChildView(id);
            if (view != null) {
                view.setImageBitmap(bitmap);
            }
            return result;
        }
    
        /**还可以设置一些监听事件 -----------------------*/
    }

window\_toast.xml

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@color/window" android:orientation="vertical" tools:context="www.weshared.test2.MainActivity">
    
    
        <TextView android:paddingTop="25dp" android:id="@+id/window_toast_tv" android:layout_width="match_parent" android:layout_height="81dp" android:layout_gravity="center" android:gravity="center" />
    </LinearLayout>

State.class接口

public interface State {
        WindowManager.LayoutParams getParams();
    }

NotifyState.class

public class NotifyState implements State {
    
        @Override
        public WindowManager.LayoutParams getParams() {
    
            WindowManager.LayoutParams params = new WindowManager.LayoutParams();
    
            params.alpha = 1.0f;
            params.width = WindowManager.LayoutParams.MATCH_PARENT;
            params.height = WindowManager.LayoutParams.WRAP_CONTENT;
            params.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS;//FLAG_LAYOUT_NO_LIMITS 不限制超出屏幕外
            params.type = WindowManager.LayoutParams.TYPE_TOAST;
            params.format = PixelFormat.RGBA_8888;
            params.gravity = Gravity.START | Gravity.TOP;
            params.x = 0;
            params.y = -StatuebarUtils.getStatusBarHeight();
            params.windowAnimations = R.style.windowAnimation;
    
            return params;
        }
    }

StatuebarUtils.class

public class StatuebarUtils {
    
        /*获取状态栏的高度**/
        public static int getStatusBarHeight() {
            int height = 0;
            int resId = APP.getContext().getResources().getIdentifier("status_bar_height", "dimen", "android");
            if (resId > 0) {
                height = APP.getContext().getResources().getDimensionPixelSize(resId);
            }
            return height;
        }
    }

MainActivity.class

public class MainActivity extends AppCompatActivity implements View.OnClickListener{ 
    
        private Button show;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            show = (Button) findViewById(R.id.show);
    
            show.setOnClickListener(this);
    
        }
    
        @Override
        public void onClick(View v) {
            switch (v.getId()) {
                case R.id.show:
                    WindowToast.makeWindowToast(this).setText("欢迎欢迎").setTextColor(getResources().getColor(R.color.colorPrimary)).show(2000);
                    break;
            }
        }
    }

--------------------

权限

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
     <uses-permission android:name="android.permission.SYSTEM_OVERLAY_WINDOW"/>

[20160708143517026]: /images/20220720/e7b71d1d4b3845eda2b6f5d10febb63b.png