這篇文章將為大家詳細(xì)講解有關(guān)Android系統(tǒng)添加自定義鼠標(biāo)樣式如何通過按鍵切換,小編覺得挺實(shí)用的,因此分享給大家做個(gè)參考,希望大家閱讀完這篇文章后可以有所收獲。
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一、APP通過View修改鼠標(biāo)樣式
app view上修改鼠標(biāo)樣式比較簡(jiǎn)單,通過hover event 獲取鼠標(biāo)坐標(biāo)并使用如下方法修改為自定義圖片:
getWindow().getDecorView().setPointerIcon(PointerIcon.load(getResources(), R.drawable.pointer_spot_touch_icon));
imageView = (ImageView) findViewById(R.id.image_view); imageView.setOnHoverListener(new View.OnHoverListener() { @SuppressLint({"SetTextI18n", "ResourceType"}) @Override public boolean onHover(View v, MotionEvent event) { int what = event.getAction(); textX.setText("X : " + event.getX()); textY.setText("Y : " + event.getY()); switch(what){ case MotionEvent.ACTION_HOVER_ENTER: //鼠標(biāo)進(jìn)入view Log.i(TAG, "bottom ACTION_HOVER_ENTER..."); mOrgPI = getWindow().getDecorView().getPointerIcon(); getWindow().getDecorView().setPointerIcon(PointerIcon.load(getResources(), R.drawable.pointer_spot_touch_icon)); break; case MotionEvent.ACTION_HOVER_MOVE: //鼠標(biāo)在view上 Log.i(TAG, "bottom ACTION_HOVER_MOVE..."); break; case MotionEvent.ACTION_HOVER_EXIT: //鼠標(biāo)離開view Log.i(TAG, "bottom ACTION_HOVER_EXIT..."); getWindow().getDecorView().setPointerIcon(mOrgPI); break; } return false; } }); }
其中pointer_spot_touch_icon.xml 需要聲明為pointer-icon :
<?xml version="1.0" encoding="utf-8"?><pointer-icon xmlns:android="http://schemas.android.com/apk/res/android" android:bitmap="@drawable/pointer_red_dot_arrow" android:hotSpotX="6dp" android:hotSpotY="6dp" />
但是app修改鼠標(biāo)樣式的view關(guān)閉后,鼠標(biāo)樣式會(huì)恢復(fù)成默認(rèn)的黑箭頭,因此不依賴APP去動(dòng)態(tài)切換鼠標(biāo)樣式需要在framework層修改系統(tǒng)源碼實(shí)現(xiàn)。
二、framework層添加自定義鼠標(biāo)樣式并通過按鍵切換
(1)添加自定義樣式資源
系統(tǒng)圖標(biāo)資源在 frameworks/base/core/res/res/drawable-mdpi/ 目錄,其中pointer_arrow.png、pointer_arrow_large.png 是系統(tǒng)默認(rèn)的黑色箭頭,
pointer_arrow_red_dot.png、pointer_arrow_red_dot_large.png 是自己添加的紅點(diǎn)樣式圖片:
然后在 frameworks/base/core/res/res/drawable/ 目錄添加對(duì)應(yīng)的xml:
pointer_arrow_red_dot_icon.xml
<?xml version="1.0" encoding="utf-8"?><pointer-icon xmlns:android="http://schemas.android.com/apk/res/android" android:bitmap="@drawable/pointer_arrow_red_dot" android:hotSpotX="5dp" android:hotSpotY="5dp" />
pointer_arrow_red_dot_large_icon.xml
<?xml version="1.0" encoding="utf-8"?><pointer-icon xmlns:android="http://schemas.android.com/apk/res/android" android:bitmap="@drawable/pointer_arrow_red_dot_large" android:hotSpotX="10dp" android:hotSpotY="10dp" />
修改 frameworks/base/core/res/res/values/styles.xml 添加資源配置,注意名字的匹配!
修改frameworks/base/core/res/res/values/attrs.xml 引用資源:
(2)Java 層獲取資源
修改 frameworks/base/core/java/android/view/PointerIcon.java ,添加如下定義:
在 getSystemIconTypeIndex(int type) 函數(shù)中返回之前配置的資源:
(3)c++層添加對(duì)應(yīng)的id并加載資源
修改 frameworks/base/core/jni/android_view_PointerIcon.h
* Pointer icon styles. * Must match the definition in android.view.PointerIcon. */enum { POINTER_ICON_STYLE_CUSTOM = -1, POINTER_ICON_STYLE_NULL = 0, POINTER_ICON_STYLE_ARROW = 1000, POINTER_ICON_STYLE_CONTEXT_MENU = 1001, POINTER_ICON_STYLE_HAND = 1002, POINTER_ICON_STYLE_HELP = 1003, POINTER_ICON_STYLE_WAIT = 1004, POINTER_ICON_STYLE_CELL = 1006, POINTER_ICON_STYLE_CROSSHAIR = 1007, POINTER_ICON_STYLE_TEXT = 1008, POINTER_ICON_STYLE_VERTICAL_TEXT = 1009, POINTER_ICON_STYLE_ALIAS = 1010, POINTER_ICON_STYLE_COPY = 1011, POINTER_ICON_STYLE_NO_DROP = 1012, POINTER_ICON_STYLE_ALL_SCROLL = 1013, POINTER_ICON_STYLE_HORIZONTAL_DOUBLE_ARROW = 1014, POINTER_ICON_STYLE_VERTICAL_DOUBLE_ARROW = 1015, POINTER_ICON_STYLE_TOP_RIGHT_DOUBLE_ARROW = 1016, POINTER_ICON_STYLE_TOP_LEFT_DOUBLE_ARROW = 1017, POINTER_ICON_STYLE_ZOOM_IN = 1018, POINTER_ICON_STYLE_ZOOM_OUT = 1019, POINTER_ICON_STYLE_GRAB = 1020, POINTER_ICON_STYLE_GRABBING = 1021, POINTER_ICON_STYLE_SPOT_HOVER = 2000, POINTER_ICON_STYLE_SPOT_TOUCH = 2001, POINTER_ICON_STYLE_SPOT_ANCHOR = 2002, POINTER_ICON_STYLE_REDDOT = 10001, //增加自定義樣式的枚舉定義,與上面 PointerIcon.java 中的變量對(duì)應(yīng)};
修改frameworks/base/services/core/jni/com_android_server_input_InputManagerService.cpp ,加載到自定義枚舉變量對(duì)應(yīng)的圖片資源:
void NativeInputManager::loadAdditionalMouseResources(std::map<int32_t, SpriteIcon>* outResources, std::map<int32_t, PointerAnimation>* outAnimationResources) { JNIEnv* env = jniEnv(); for (int iconId = POINTER_ICON_STYLE_CONTEXT_MENU; iconId <= POINTER_ICON_STYLE_REDDOT; ++iconId) { PointerIcon pointerIcon; loadSystemIconAsSpriteWithPointerIcon( env, mContextObj, iconId, &pointerIcon, &((*outResources)[iconId])); if (!pointerIcon.bitmapFrames.empty()) { PointerAnimation& animationData = (*outAnimationResources)[iconId]; size_t numFrames = pointerIcon.bitmapFrames.size() + 1; animationData.durationPerFrame = milliseconds_to_nanoseconds(pointerIcon.durationPerFrame); animationData.animationFrames.reserve(numFrames); animationData.animationFrames.push_back(SpriteIcon( pointerIcon.bitmap, pointerIcon.hotSpotX, pointerIcon.hotSpotY)); for (size_t i = 0; i < numFrames - 1; ++i) { animationData.animationFrames.push_back(SpriteIcon( pointerIcon.bitmapFrames[i], pointerIcon.hotSpotX, pointerIcon.hotSpotY)); } } } loadSystemIconAsSprite(env, mContextObj, POINTER_ICON_STYLE_NULL, &((*outResources)[POINTER_ICON_STYLE_NULL]));}
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