android_mobile_linkdiay/app/src/main/java/com/linkdialy/mobile/kuyicloud/BaseWebViewActivity.java

package com.linkdialy.mobile.kuyicloud;


import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.annotation.RequiresApi;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.KeyEvent;
import android.view.ViewGroup;
import android.webkit.JavascriptInterface;
import android.widget.Toast;

import com.linkdialy.mobile.kuyicloud.utils.WebViewJavaScriptFunction;
import com.tencent.smtt.export.external.interfaces.GeolocationPermissionsCallback;
import com.tencent.smtt.export.external.interfaces.JsPromptResult;
import com.tencent.smtt.export.external.interfaces.JsResult;
import com.tencent.smtt.sdk.ValueCallback;
import com.tencent.smtt.sdk.WebChromeClient;
import com.tencent.smtt.sdk.WebSettings;
import com.tencent.smtt.sdk.WebView;
import com.tencent.smtt.sdk.WebViewClient;

import static com.linkdialy.mobile.kuyicloud.utils.PermissionUtil.REQUEST_EXTERNAL_STORAGE;
import static com.linkdialy.mobile.kuyicloud.utils.PermissionUtil.REQUEST_GEOLOCATION;
import static com.linkdialy.mobile.kuyicloud.utils.PermissionUtil.verifyLocationPermissions;

/**
 * Demo 基础 WebViewActivity，所有WebView能力Demo继承该 Activity 开发
 */
public class BaseWebViewActivity extends AppCompatActivity {
    private String TAG = "BaseWebViewActivity";

    protected WebView mWebView;
    private static final int DISABLE_ALPHA = 120;
    private static final int ENABLE_ALPHA = 255;
    private static final int FILE_CHOOSER_REQUEST = 100;

    private long mClickBackTime = 0;


    private ValueCallback<Uri[]> mFilePathCallback;

    private GeolocationPermissionsCallback mGeolocationCallback;
    private String locationPermissionUrl;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_webview);
        initWebView();
    }

    /**
     * 自定义初始化WebView设置，此处为默认 BaseWebViewActivity 初始化
     * 可通过继承该 Activity Override 该方法做自己的实现
     */
    protected void initWebView() {

        Context context = this;
        mWebView = new WebView(context);
        ViewGroup mContainer = findViewById(R.id.webViewContainer);
        mContainer.addView(mWebView);
        WebSettings webSetting = mWebView.getSettings();
        webSetting.setJavaScriptEnabled(true);
        webSetting.setAllowFileAccess(true);
        webSetting.setSupportZoom(true);
        webSetting.setDatabaseEnabled(true);
        webSetting.setAllowFileAccess(true);
        webSetting.setDomStorageEnabled(true);
        initWebViewClient();
        initWebChromeClient();
        initJavaScriptInterface();

        mWebView.loadUrl("http://mobile.kuyicloud.com/");
    }


    private void initWebViewClient() {
        mWebView.setWebViewClient(new WebViewClient() {

            /**
             * 具体接口使用细节请参考文档：
             * https://x5.tencent.com/docs/webview.html
             * 或 Android WebKit 官方：
             * https://developer.android.com/reference/android/webkit/WebChromeClient
             */

            @Override
            public void onPageStarted(WebView view, String url, Bitmap favicon) {
                Log.i(TAG, "onPageStarted, view:" + view + ", url:" + url);
            }

            @Override
            public void onPageFinished(WebView view, String url) {
                Log.i(TAG, "onPageFinished, view:" + view + ", url:" + url);
            }

            @Override
            public void onReceivedError(WebView webView, int errorCode, String description, String failingUrl) {

            }


        });
    }

    private void initWebChromeClient() {
        final Context context = this;
        final Activity activity = this;
        mWebView.setWebChromeClient(new WebChromeClient() {
            /**
             * 具体接口使用细节请参考文档：
             * https://x5.tencent.com/docs/webview.html
             * 或 Android WebKit 官方：
             * https://developer.android.com/reference/android/webkit/WebChromeClient
             */

            @Override
            public void onProgressChanged(WebView view, int newProgress) {
                Log.i(TAG, "onProgressChanged, newProgress:" + newProgress + ", view:" + view);
            }

            @Override
            public boolean onJsAlert(WebView webView, String url, String message, JsResult result) {

                return true;
            }

            @Override
            public boolean onJsConfirm(WebView webView, String url, String message, JsResult result) {

                return true;
            }

            @Override
            public boolean onJsBeforeUnload(WebView webView, String url, String message, JsResult result) {

                return true;
            }

            @Override
            public boolean onJsPrompt(WebView webView, String url, String message, String defaultValue, JsPromptResult result) {

                return true;
            }

            /**
             * Return value usage see FILE_CHOOSE_REQUEST in
             * {@link BaseWebViewActivity#onActivityResult(int, int, Intent)}
             */
            @Override
            public boolean onShowFileChooser(WebView webView,
                    ValueCallback<Uri[]> filePathCallback,
                    FileChooserParams fileChooserParams) {
                Log.i(TAG, "openFileChooser: " + fileChooserParams.getMode());
                mFilePathCallback = filePathCallback;
                openFileChooseProcess(fileChooserParams.getMode() == FileChooserParams.MODE_OPEN_MULTIPLE);
                return true;
            }

            @Override
            public void onGeolocationPermissionsShowPrompt(String origin,
                    GeolocationPermissionsCallback geolocationPermissionsCallback) {
                if (verifyLocationPermissions(activity)) {
                    geolocationPermissionsCallback.invoke(origin, true, false);
                } else {
                    locationPermissionUrl = origin;
                    mGeolocationCallback = geolocationPermissionsCallback;
                }
            }
        });
    }

    private void initJavaScriptInterface() {
        final Activity context = this;
        mWebView.addJavascriptInterface(new WebViewJavaScriptFunction() {
            @Override
            public void onJsFunctionCalled(String tag) {

            }
            @JavascriptInterface
            public void openDebugX5() {
                mWebView.loadUrl("http://mobile.kuyicloud.com/");
            }


        }, "Android");
    }

    /* Don't care about the Base UI Logic below ^_^ */
    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == REQUEST_EXTERNAL_STORAGE) {
            initWebView();
        }

        if (mGeolocationCallback != null && requestCode == REQUEST_GEOLOCATION) {
            boolean allow = grantResults[0] == PackageManager.PERMISSION_GRANTED;
            mGeolocationCallback.invoke(locationPermissionUrl, allow,false);
            mGeolocationCallback = null;
            locationPermissionUrl = "";
        }
    }

    @Override
    protected void onDestroy() {
        if (mWebView != null) {
            mWebView.destroy();
        }
        super.onDestroy();
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            if (mWebView != null && mWebView.canGoBack()) {
                mWebView.goBack();
                return true;
            }
            long currentTime = System.currentTimeMillis();
            // 3秒内连按两次后退按钮，退出应用
            if (currentTime - mClickBackTime < 3000) {
//                android.os.Process.killProcess(android.os.Process.myPid());
                finish();
            } else {
                Toast.makeText(getApplicationContext(), "再按一次返回键退出", Toast.LENGTH_SHORT).show();
                mClickBackTime = currentTime;
            }

            return true;
        }

        return super.onKeyDown(keyCode, event);
    }

    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
            if (resultCode == RESULT_OK) {
                if (mFilePathCallback != null) {
                    if(data != null && data.getClipData() != null) {
                        //有选择多个文件
                        int count = data.getClipData().getItemCount();
                        Log.i(TAG, "url count ：  " + count);
                        Uri[] uris = new Uri[count];
                        int currentItem = 0;
                        while(currentItem < count) {
                            Uri fileUri = data.getClipData().getItemAt(currentItem).getUri();
                            uris[currentItem] = fileUri;
                            currentItem = currentItem + 1;
                        }
                        mFilePathCallback.onReceiveValue(uris);
                    } else {
                        Uri result = data == null ? null : data.getData();
                        Log.e(TAG, "" + result);
                        mFilePathCallback.onReceiveValue(new Uri[]{result});
                    }
                    mFilePathCallback = null;
                }
            }
    }

    private void openFileChooseProcess(boolean isMulti) {
        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.addCategory(Intent.CATEGORY_DEFAULT);
        intent.setType("*/*");
        if (isMulti) {
            Log.e(TAG, "putExtra");
            intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
        }
        startActivityForResult(Intent.createChooser(intent, "FileChooser"), FILE_CHOOSER_REQUEST);
    }

}