javascript - 如何 Intent 在Webview中打开Whatsapp？

Question

我想将Whatsapp用作客户服务。我的应用程序是webview，当客户进入联系页面时，会看到一个whatsapp和“聊天我们”按钮以与客户服务聊天。

当客户单击按钮时，他们没有直接打开whatsapp并显示ERR_UNKOWN_SCHEME_URL
我正在使用webview在我的应用程序中使用android studio和kotlin。

这是我的 Activity :

class MainActivity : AppCompatActivity() {
    internal var webView: WebView? = null
    private var mCM: String? = null
    private var mUM: ValueCallback<Uri>? = null
    private var mUMA: ValueCallback<Array<Uri?>>? = null


    @SuppressLint("SetJavaScriptEnabled", "WrongViewCast")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        webView = findViewById(R.id.ifView) as WebView
        assert(webView != null)
        val webSettings = webView!!.settings
        webSettings.javaScriptEnabled = true
        webSettings.allowFileAccess = true

        if (Build.VERSION.SDK_INT >= 21) {
            webSettings.mixedContentMode = 0
            webView!!.setLayerType(View.LAYER_TYPE_HARDWARE, null)
        }
        else {
            webView!!.setLayerType(View.LAYER_TYPE_SOFTWARE, null)
        }
        webView!!.webViewClient = Callback()
        webView!!.loadUrl("http://example.com") //add your test web/page address here
        webView!!.setWebChromeClient(object : WebChromeClient() {

    SuppressWarnings("deprecation")
    @Override
    fun shouldOverrideUrlLoading(view: WebView, url: String?): Boolean
    {
        if (url != null && url.startsWith("whatsapp://")) {
            val sendIntent = Intent();
            sendIntent.setAction(Intent.ACTION_SEND);
            sendIntent.putExtra(Intent.EXTRA_TEXT, "Moon TV");
            sendIntent.setType("text/plain");
            sendIntent.setPackage("com.whatsapp");
            startActivity(sendIntent)
            return true
            /* ContextCompat.startActivity(sendIntent);return true;*/

        } else {
            return false;
        }
    }

这是我的 Callback()代码:

inner class Callback : WebViewClient() {
        override fun onReceivedError(view: WebView, errorCode: Int, description: String, failingUrl: String) {
            Toast.makeText(applicationContext, "No Internet Access!", Toast.LENGTH_SHORT).show()
            view.loadUrl("file:///android_asset/error.html")            
        }
}

这是打开直接聊天的php代码 Whatsapps客户服务

    <a href="https://api.whatsapp.com/send?phone=628118906771&amp;text=Halo%20Example," class="btn btn-success btn-md">Visit WhatsApp</a>

我想要在Webview中使用Intent WhatsApp。谢谢。

Answer 1

从您的MyActivity中，删除以下内容:

SuppressWarnings("deprecation")
    @Override
    fun shouldOverrideUrlLoading(view: WebView, url: String?): Boolean
    {
        if (url != null && url.startsWith("whatsapp://")) {
            val sendIntent = Intent();
            sendIntent.setAction(Intent.ACTION_SEND);
            sendIntent.putExtra(Intent.EXTRA_TEXT, "Moon TV");
            sendIntent.setType("text/plain");
            sendIntent.setPackage("com.whatsapp");
            startActivity(sendIntent)
            return true
            /* ContextCompat.startActivity(sendIntent);return true;*/

        } else {
            return false;
        }

然后，将此代码添加到 Callback()函数或 inner class Callback中:

override fun shouldOverrideUrlLoading(view: WebView, url: String?): Boolean {

            var overrideUrlLoading = false

            if (url != null && url.startsWith("whatsapp://")) {

                view.context.startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(url)))

                overrideUrlLoading = true

            } else {

                view.loadUrl(url)
            }

            return overrideUrlLoading
        }