资料
Android WebView 的使用(超详细用法)
webivew
- 高可靠 出了问题不影响主进程
- 可扩展 html页面经常和native通信，增加功能
- 从0开始 在工作中可用的模块
课程大纲
- H5会替代Native么？
- H5和Native的使用场景；
- Webview和App其他组件的关系和通信；
- WebSettings常用方法讲解；
- WebChromeClient常用方法讲解；
- WebviewClient常用方法讲解；
模块化
组件化
控件化
【苏司喵】女娃“DUMDi DUMDi”全曲翻跳 (G)I-DLE
可以支持http
android:usersCleartextTraffic="true"
google 组件化的东西
googleAutoServiceDependency=‘com.google.auto.service:auto-service:1.0-rc7’
接口下沉
（cc根据字符串来的，不需要接口下沉）
Android NestedScrollingChildHelper类源码翻译
NestedScrollAgentWebView
public class NestedScrollAgentWebView extends AgentWebView implements NestedScrollingChild {
private int mLastMotionY;
private final int[] mScrollOffset = new int[2];
private final int[] mScrollConsumed = new int[2];
private int mNestedYOffset;
private NestedScrollingChildHelper mChildHelper;
public NestedScrollAgentWebView(Context context) {
super(context);
init();
}
public NestedScrollAgentWebView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
private void init() {
mChildHelper = new NestedScrollingChildHelper(this);
setNestedScrollingEnabled(true);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
boolean result = false;
MotionEvent trackedEvent = MotionEvent.obtain(event);
final int action = MotionEventCompat.getActionMasked(event);
if (action == MotionEvent.ACTION_DOWN) {
mNestedYOffset = 0;
}
int y = (int) event.getY();
event.offsetLocation(0, mNestedYOffset);
switch (action) {
case MotionEvent.ACTION_DOWN:
mLastMotionY = y;
startNestedScroll(ViewCompat.SCROLL_AXIS_VERTICAL);
result = super.onTouchEvent(event);
break;
case MotionEvent.ACTION_MOVE:
int deltaY = mLastMotionY - y;
if (dispatchNestedPreScroll(0, deltaY, mScrollConsumed, mScrollOffset)) {
deltaY -= mScrollConsumed[1];
trackedEvent.offsetLocation(0, mScrollOffset[1]);
mNestedYOffset += mScrollOffset[1];
}
mLastMotionY = y - mScrollOffset[1];
int oldY = getScrollY();
int newScrollY = Math.max(0, oldY + deltaY);
int dyConsumed = newScrollY - oldY;
int dyUnconsumed = deltaY - dyConsumed;
if (dispatchNestedScroll(0, dyConsumed, 0, dyUnconsumed, mScrollOffset)) {
mLastMotionY -= mScrollOffset[1];
trackedEvent.offsetLocation(0, mScrollOffset[1]);
mNestedYOffset += mScrollOffset[1];
}
result = super.onTouchEvent(trackedEvent);
trackedEvent.recycle();
break;
case MotionEvent.ACTION_POINTER_DOWN:
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
stopNestedScroll();
result = super.onTouchEvent(event);
break;
}
return result;
}
@Override
public void setNestedScrollingEnabled(boolean enabled) {
mChildHelper.setNestedScrollingEnabled(enabled);
}
@Override
public boolean isNestedScrollingEnabled() {
return mChildHelper.isNestedScrollingEnabled();
}
@Override
public boolean startNestedScroll(int axes) {
return mChildHelper.startNestedScroll(axes);
}
@Override
public void stopNestedScroll() {
mChildHelper.stopNestedScroll();
}
@Override
public boolean hasNestedScrollingParent() {
return mChildHelper.hasNestedScrollingParent();
}
@Override
public boolean dispatchNestedScroll(int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, int[] offsetInWindow) {
return mChildHelper.dispatchNestedScroll(dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed, offsetInWindow);
}
@Override
public boolean dispatchNestedPreScroll(int dx, int dy, int[] consumed, int[] offsetInWindow) {
return mChildHelper.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow);
}
@Override
public boolean dispatchNestedFling(float velocityX, float velocityY, boolean consumed) {
return mChildHelper.dispatchNestedFling(velocityX, velocityY, consumed);
}
@Override
public boolean dispatchNestedPreFling(float velocityX, float velocityY) {
return mChildHelper.dispatchNestedPreFling(velocityX, velocityY);
}
}private fun initWebView() {
var settings = wv_stats.settings
settings.javaScriptEnabled = true // 可以使用javaScript
settings.javaScriptCanOpenWindowsAutomatically = true
settings.domStorageEnabled = true
settings.cacheMode = WebSettings.LOAD_NO_CACHE
settings.allowFileAccess = true
settings.useWideViewPort = true
settings.setSupportZoom(false) // 支持缩放
settings.defaultTextEncodingName = "utf-8"
settings.loadWithOverviewMode = true
settings.setNeedInitialFocus(false)
settings.userAgentString = settings.userAgentString + "; Android"
/*解决图片不显示*/
settings.blockNetworkImage = false //解决图片不显示
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
//允许混合（http，https）
settings.mixedContentMode = WebSettings.MIXED_CONTENT_COMPATIBILITY_MODE
}
wv_stats.addJavascriptInterface(StatsInterface(), "AndroidApi")
wv_stats.webViewClient = object : WebViewClient() {
override fun onPageStarted(view: WebView?, url: String?, favicon: Bitmap?) {
super.onPageStarted(view, url, favicon)
}
override fun onPageFinished(view: WebView?, url: String?) {
super.onPageFinished(view, url)
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
override fun shouldOverrideUrlLoading(view: WebView?, request: WebResourceRequest?): Boolean {
val url = request?.url.toString()
view?.loadUrl(url)
return true
}
override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
view?.loadUrl(url)
return true
}
override fun onReceivedSslError(view: WebView?, handler: SslErrorHandler, error: SslError) {
handler.proceed() //接受所有网站的证书
}
}
wv_stats.webChromeClient = object : WebChromeClient() {
override fun onProgressChanged(view: WebView, newProgress: Int) {
if (newProgress == 100) {
mLoading.hide()
}
}
override fun onReceivedTitle(view: WebView, title: String) {}
override fun onJsAlert(view: WebView?, url: String?, message: String?, result: JsResult?): Boolean {
Utils.Log.i("onJsAlert url=$url; message=$message")
//Toast.makeText(this@ActivityTraceSrc, message, Toast.LENGTH_LONG).show()
result!!.confirm()
return super.onJsAlert(view, url, message, result)
}
}
}
inner class StatsInterface {
@JavascriptInterface
fun getAppParams(): String {
return mParams.toString()
}
@JavascriptInterface
fun jumpDetail(data: String?) {
// Utils.Toast.popupMessage(data ?: "null")
if (TextUtils.isEmpty(data)) return
var recordEntity = Gson().fromJson<RecordEntity>(data, RecordEntity::class.java)
val intent = Intent(this@WarningStatsActivity, WarningDetailsActivity::class.java)
intent.putExtra(Consts.IntentKeys.KEY_FUN_ID, mFunId)
intent.putExtra(Consts.IntentKeys.KEY_POSITION, 0) //由于只显示一个详情页，没有左右切换页面，所以传0，不能传position
intent.putExtra(Consts.IntentKeys.KEY_TOTAL, 1)
intent.putExtra(Consts.IntentKeys.KEY_SHARE_USER_ID, getShareUserId()) //要用参数里的shareUserId
WeakDataHolder.setData(mFunId, arrayListOf(recordEntity))
this@WarningStatsActivity.startActivity(intent)
}
}
fun getShareUserId(): String {
return YQMSApplication.loginInfo?.userId ?: ""
}
override fun initData() {
super.initData()
// mParams.timestamp = System.currentTimeMillis()
// wv_stats.loadUrl("https://yqms-beta-g3.istarshine.com/share")
wv_stats.loadUrl(ApiConfig.getWebBaseUrl() + "share/warning")
}ScrollView+WebView长度适配问题
android scollview嵌套webview底部空白，高度无法自适应解决ScrollView嵌套WebView出现底部空白问题
webview 不能全屏 底部 有空白部
Android-WebView在ScrollView中高度不稳定末尾有大段空白问题解决
Android Webview与ScrollView的滚动兼容及留白处理的方法
