导航显示按钮

modules/mogo-module-common/src/main/java/com/mogo/module/common/wm/DialogImpl.java

@@ -29,6 +29,11 @@ class DialogImpl implements IWindowManagerView {
         return dialog.isShowing();
     }
 
+    @Override
+    public void handleTouchEvent(OnViewClickListener listener) {
+        // do nothings.
+    }
+
     @Override
     public void show() {
         dialog.show();

modules/mogo-module-common/src/main/java/com/mogo/module/common/wm/IWindowManagerView.java

@@ -1,18 +1,27 @@
 package com.mogo.module.common.wm;
 
+import android.view.View;
+
 interface IWindowManagerView {
     /**
      * 初始化
+     *
      * @param params contentView包装类
      */
-    void init(WindowManagerView.WMViewParams params);
+    void init( WindowManagerView.WMViewParams params );
 
     /**
      * 是否显示
+     *
      * @return true - 显示中
      */
     boolean isShowing();
 
+    /**
+     * 支持手势拖动，该操作只支持触发点击操作
+     */
+    void handleTouchEvent(OnViewClickListener listener);
+
     /**
      * 显示
      */
@@ -22,4 +31,8 @@ interface IWindowManagerView {
      * 隐藏
      */
     void hide();
+
+    interface OnViewClickListener {
+        void onClick( View view );
+    }
 }

modules/mogo-module-common/src/main/java/com/mogo/module/common/wm/WindowManagerImpl.java

@@ -3,12 +3,9 @@ package com.mogo.module.common.wm;
 import android.content.Context;
 import android.graphics.PixelFormat;
 import android.os.Build;
-import android.view.Gravity;
+import android.view.MotionEvent;
 import android.view.WindowManager;
 
-import com.mogo.module.common.utils.CarSeries;
-import com.mogo.utils.WindowUtils;
-
 /**
  * 采用windowManager实现接口
  */
@@ -19,10 +16,13 @@ class WindowManagerImpl implements IWindowManagerView {
     private WindowManagerView.WMViewParams mParams;
     private boolean isShowing;
 
+    private float mLastX, mLastY;
+    private int mOldOffsetX, mOldOffsetY;
+
     @Override
-    public void init(WindowManagerView.WMViewParams params) {
+    public void init( WindowManagerView.WMViewParams params ) {
         mParams = params;
-        mWindowManager = (WindowManager) mParams.mContext.getApplicationContext().getSystemService( Context.WINDOW_SERVICE );
+        mWindowManager = ( WindowManager ) mParams.mContext.getApplicationContext().getSystemService( Context.WINDOW_SERVICE );
         mLayoutParams = new WindowManager.LayoutParams();
         if ( Build.VERSION.SDK_INT >= Build.VERSION_CODES.O ) {
             mLayoutParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
@@ -35,8 +35,8 @@ class WindowManagerImpl implements IWindowManagerView {
 
         mLayoutParams.width = mParams.mWidth;
         mLayoutParams.height = mParams.mHeight;
-        mLayoutParams.x = mParams.mX;
-        mLayoutParams.y = mParams.mY;
+        mOldOffsetX = mLayoutParams.x = mParams.mX;
+        mOldOffsetY = mLayoutParams.y = mParams.mY;
         mLayoutParams.dimAmount = 0.5f;
     }
 
@@ -45,18 +45,46 @@ class WindowManagerImpl implements IWindowManagerView {
         return isShowing;
     }
 
+    @Override
+    public void handleTouchEvent(OnViewClickListener listener) {
+        mParams.mContentView.setOnTouchListener( ( v, event ) -> {
+            final int action = event.getAction();
+            float x = event.getX();
+            float y = event.getY();
+            if ( action == MotionEvent.ACTION_DOWN ) {
+                mLastX = x;
+                mLastY = y;
+            } else if ( action == MotionEvent.ACTION_MOVE ) {
+                mLayoutParams.x += ( int ) ( x - mLastX ) / 3; // 减小偏移量,防止过度抖动
+                mLayoutParams.y += ( int ) ( y - mLastY ) / 3; // 减小偏移量,防止过度抖动
+                mWindowManager.updateViewLayout( mParams.mContentView, mLayoutParams );
+            } else if ( action == MotionEvent.ACTION_UP ) {
+                int newOffsetX = mLayoutParams.x;
+                int newOffsetY = mLayoutParams.y;
+                // 只要按钮一动位置不是很大,就认为是点击事件
+                if ( Math.abs( mOldOffsetX - newOffsetX ) <= 20
+                        && Math.abs( mOldOffsetY - newOffsetY ) <= 20 ) {
+                    listener.onClick( mParams.mContentView );
+                }
+                mOldOffsetX = newOffsetX;
+                mOldOffsetY = newOffsetY;
+            }
+            return true;
+        } );
+    }
+
     @Override
     public void show() {
-        if(!isShowing){
+        if ( !isShowing ) {
             isShowing = true;
-            mWindowManager.addView(mParams.mContentView,mLayoutParams);
+            mWindowManager.addView( mParams.mContentView, mLayoutParams );
         }
     }
 
     @Override
     public void hide() {
-        if (isShowing && mParams != null) {
-            mWindowManager.removeView(mParams.mContentView);
+        if ( isShowing && mParams != null ) {
+            mWindowManager.removeView( mParams.mContentView );
             isShowing = false;
         }
     }

modules/mogo-module-common/src/main/java/com/mogo/module/common/wm/WindowManagerView.java

@@ -33,6 +33,10 @@ public class WindowManagerView {
         return mParams.mContentView.findViewById( id );
     }
 
+    public void attachTouchEvent( IWindowManagerView.OnViewClickListener listener ) {
+        mManagerView.handleTouchEvent(listener);
+    }
+
     public void show() {
         mManagerView.show();
     }