七、Android和H5的交互
2019-02-09 本文已影响0人
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文件目录
1.png
一、Android与H5的交互
JavaAndJavaScriptCall.html
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<script type="text/javascript">
function javaCallJs(){
document.getElementById("content").innerHTML +=
"<br\>java调用了js无参函数";
}
function javaCallJs(arg){
document.getElementById("content").innerHTML =
("欢迎："+arg );
}
</script>
</head>
<body>
<div align="right">这是H5页面</div>
<p><img src="http://192.168.1.3:8080/test/tongliya.png"></p>
<input type="button" value="点击调用Java代码" onclick="window.Android.showToast()"/>
</body>
</html>
AndroidAndJsCallActivity.java
public class AndroidAndJsCallActivity extends Activity implements View.OnClickListener {
private EditText etNumber;
private EditText etPassword;
private Button btnLogin;
private WebView webView;
/**
* Find the Views in the layout<br />
* <br />
* Auto-created on 2019-02-08 15:24:01 by Android Layout Finder
* (http://www.buzzingandroid.com/tools/android-layout-finder)
*/
private void findViews() {
setContentView(R.layout.activity_android_and_js_call);
etNumber = (EditText) findViewById(R.id.et_number);
etPassword = (EditText) findViewById(R.id.et_password);
btnLogin = (Button) findViewById(R.id.btn_login);
btnLogin.setOnClickListener(this);
}
/**
* Handle button click events<br />
* <br />
* Auto-created on 2019-02-08 15:24:01 by Android Layout Finder
* (http://www.buzzingandroid.com/tools/android-layout-finder)
*/
@Override
public void onClick(View v) {
if (v == btnLogin) {
// Handle clicks for btnLogin
login();
}
}
private void login() {
String account = etNumber.getText().toString().trim();
String password = etPassword.getText().toString().trim();
if (TextUtils.isEmpty(account) || TextUtils.isEmpty(password)) {
Toast.makeText(this, "账号或密码不能为空", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "登录", Toast.LENGTH_SHORT).show();
login(account);//加载h5页面
}
}
private void login(String account) {
//java调用h5
webView.loadUrl("javascript:javaCallJs(" + "'" + account + "'" + ")");
setContentView(webView);
}
private void initWebview() {
webView = new WebView(this);
WebSettings settings = webView.getSettings();
//设置支持js
settings.setJavaScriptEnabled(true);
//不调用系统浏览器
webView.setWebViewClient(new WebViewClient());
//webView.loadUrl("https://www.baidu.com/");
//加载本地js
webView.loadUrl("file:///android_asset/JavaAndJavaScriptCall.html");
//设置支持js调用java
webView.addJavascriptInterface(new JavaScriptInterface(), "Android");
}
class JavaScriptInterface {
@JavascriptInterface
public void showToast() {
Toast.makeText(AndroidAndJsCallActivity.this, "我是Java代码", Toast.LENGTH_SHORT).show();
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
findViews();
initWebview();
}
}
activity_android_and_js_call.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"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="@android:color/holo_blue_light"
android:gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="登录页面"
android:textColor="@android:color/black"
android:textSize="20sp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/bg_shap"
android:orientation="vertical"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="账号："
android:textColor="#000000" />
<EditText
android:id="@+id/et_number"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入账号..."
android:textColor="#000000" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="密码："
android:textColor="#000000" />
<EditText
android:id="@+id/et_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="请输入密码..."
android:password="true"
android:textColor="#000000" />
<Button
android:id="@+id/btn_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="登录"
android:textColor="#000000"
android:textSize="25sp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
在H5页面调用Android播放视频
链接：https://pan.baidu.com/s/1sHQCTOSzKacMNRtNCJXXLA
提取码：5c49
html所需要的资源文件
H5CallJavaVedioActivity .java
public class H5CallJavaVedioActivity extends Activity {
private WebView webview;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_h5_call_java_vedio);
webview = (WebView) findViewById(R.id.webview);
initWebview();
}
private void initWebview() {
WebSettings settings = webview.getSettings();
//设置支持js
settings.setJavaScriptEnabled(true);
//不调用浏览器
webview.setWebViewClient(new WebViewClient());
//webView.loadUrl("https://www.baidu.com/");
//加载本地js
webview.loadUrl("file:///android_asset/RealNetJSCallJavaActivity.htm");
//设置支持js调用java
webview.addJavascriptInterface(new JavaScriptInterface(), "android");
}
class JavaScriptInterface {
@JavascriptInterface
public void playVideo(String id, String url, String title) {
//调起系统所有播放器
Intent intent = new Intent();
intent.setDataAndType(Uri.parse(url), "video/*");
startActivity(intent);
}
}
}
activity_h5_call_java_vedio.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
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" />
</RelativeLayout>
