android键盘自动弹起来了,H5input第一次自动弹起IOS和Android中的键盘

场景

针对ios和android端需要在H5中首次直接拉起原生键盘&＃xff0c;此处需添加原生代码处理

android

原生中模拟点击事件触发&＃xff0c;代码如下

public void showSoftInputMethod(final Callback callback) {

runOnMainThread(new Runnable() {

&＃64;Override

public void run() {

WebView webView &＃61; mWebViewRef.get();

if (webView !&＃61; null) {

webView.dispatchTouchEvent(MotionEvent.obtain(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), MotionEvent.ACTION_DOWN, 0, 0, 0));

webView.dispatchTouchEvent(MotionEvent.obtain(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), MotionEvent.ACTION_UP, 0, 0, 0));

callback.invoke(SUCCESS, "SUCCESS");

} else {

callback.invoke(ERROR, "current webView is null");

}

}});

}

IOS

UIWebView

想一开始唤起键盘&＃xff0c;除了web端需要设置input 的focus状态外&＃xff0c;我们还需要将keyboardDisplayRequiresUserAction设置为false

WKWebView

WKWebView是没有keyboardDisplayRequiresUserAction这个属性的&＃xff0c;但又想做想一开始就能唤起键盘&＃xff0c;怎么办呢&＃xff1f;只能通过runtime处理了&＃xff0c;以下是收集Stack Overflow的方法

#import

&＃64;implementationWebViewInjection

&＃43; (void)allowDisplayingKeyboardWithoutUserAction:(BOOL)allow {

Class class &＃61; NSClassFromString(&＃64;"WKContentView");

NSOperatingSystemVersion iOS_11_3_0 &＃61; (NSOperatingSystemVersion){11, 3, 0};

NSOperatingSystemVersion iOS_12_2_0 &＃61; (NSOperatingSystemVersion){12, 2, 0};

if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_12_2_0]) {

SEL selector &＃61; sel_getUid("_elementDidFocus:userIsInteracting:blurPreviousNode:changingActivityState:userObject:");

Methodmethod &＃61;class_getInstanceMethod(class, selector);

if(allowMethod&＃61;&＃61;0x0) {

IMPoriginal &＃61;method_getImplementation(method);

allowMethod&＃61;imp_implementationWithBlock(^void(idme,void* arg0,BOOLarg1,BOOLarg2,BOOLarg3,idarg4) {

((void(*)(id,SEL,void*,BOOL,BOOL,BOOL,id))original)(me, selector, arg0,TRUE, arg2, arg3, arg4);

});

disAllowMethod&＃61; original;

}

if(allow) {

method_setImplementation(method, allowMethod);

}else{

method_setImplementation(method, disAllowMethod);

}

}

else if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_11_3_0]) {

SEL selector &＃61; sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:changingActivityState:userObject:");

Methodmethod &＃61;class_getInstanceMethod(class, selector);

if(allowMethod&＃61;&＃61;0x0) {

IMPoriginal &＃61;method_getImplementation(method);

allowMethod&＃61;imp_implementationWithBlock(^void(idme,void* arg0,BOOLarg1,BOOLarg2,BOOLarg3,idarg4) {

((void(*)(id,SEL,void*,BOOL,BOOL,BOOL,id))original)(me, selector, arg0,TRUE, arg2, arg3, arg4);

});

disAllowMethod&＃61; original;

}

if(allow) {

method_setImplementation(method, allowMethod);

}

else{

method_setImplementation(method, disAllowMethod);

}

}else{

SEL selector &＃61; sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:userObject:");

Methodmethod &＃61;class_getInstanceMethod(class, selector);

if(allowMethod&＃61;&＃61;0x0) {

IMPoriginal &＃61;method_getImplementation(method);

allowMethod&＃61;imp_implementationWithBlock(^void(idme,void* arg0,BOOLarg1,BOOLarg2,idarg3) {

((void(*)(id,SEL,void*,BOOL,BOOL,id))original)(me, selector, arg0,TRUE, arg2, arg3);

});

disAllowMethod&＃61; original;

}

if(allow) {

method_setImplementation(method, allowMethod);

}else{

method_setImplementation(method, disAllowMethod);

}

}

}