什麼是WebView
WebView是用來打開網頁的一種UI控件,可以在App內跳轉到指定網址,而不是採用系統瀏覽器打開網頁.
基礎樣例
效果圖
實現方案
- activity
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val url = "https://www.baidu.com"
setSettings()
webView.loadUrl(url)
}
private fun setSettings() {
val settings = webView.settings
settings.javaScriptEnabled = true//設置WebView屬性,能夠執行Javascript腳本
settings.cacheMode = WebSettings.LOAD_NO_CACHE
settings.layoutAlgorithm = WebSettings.LayoutAlgorithm.NORMAL
settings.allowFileAccess = true //設置可以訪問文件
settings.builtInZoomControls = false //設置支持縮放
settings.setSupportZoom(true)
settings.useWideViewPort = true
settings.loadWithOverviewMode = true
settings.setAppCacheEnabled(true)
settings.domStorageEnabled = true
settings.databaseEnabled = true
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
settings.mixedContentMode = WebSettings.MIXED_CONTENT_ALWAYS_ALLOW
}
}
}
- 佈局文件activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
- Manifest中增加權限
<uses-permission android:name="android.permission.INTERNET" />