优化图片上传

app/src/main/AndroidManifest.xml

@@ -2,8 +2,13 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.nsgk.ruralWeb">
 
-    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
     <application
+        android:requestLegacyExternalStorage="true"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher_white"
         android:roundIcon="@mipmap/ic_launcher_white_round"

app/src/main/java/com/nsgk/ruralWeb/BaseWebChromeClient.java

@@ -0,0 +1,125 @@
+package com.nsgk.ruralWeb;
+
+import android.annotation.TargetApi;
+import android.app.Activity;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Build;
+import android.webkit.PermissionRequest;
+import android.webkit.ValueCallback;
+import android.webkit.WebChromeClient;
+import android.webkit.WebView;
+
+public class BaseWebChromeClient extends WebChromeClient {
+    private static final int CHOOSE_REQUEST_CODE = 0x9001;
+    private Activity mActivity;
+    private ValueCallback<Uri> uploadFile;//定义接受返回值
+    private ValueCallback<Uri[]> uploadFiles;
+//    private ProgressBar bar;
+//    private TextView mTitle;
+
+    public BaseWebChromeClient(Activity mActivity) {
+        this.mActivity = mActivity;
+//        this.bar=bar;
+//        this.mTitle=title;
+    }
+
+    @Override
+    public void onProgressChanged(WebView view, int newProgress) {
+        if (newProgress == 100) {
+//            bar.setVisibility(View.INVISIBLE);
+        } else {
+//            if (View.INVISIBLE == bar.getVisibility()) {
+//                bar.setVisibility(View.VISIBLE);
+//            }
+//            bar.setProgress(newProgress);
+        }
+        super.onProgressChanged(view, newProgress);
+    }
+
+    @Override
+
+    public void onReceivedTitle(WebView view, String title) {
+
+        super.onReceivedTitle(view, title);
+
+
+//        mTitle.setText(title);
+
+    }
+
+    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+    @Override
+    public void onPermissionRequest(PermissionRequest request) {
+        //                super.onPermissionRequest(request);//必须要注视掉
+        request.grant(request.getResources());
+    }
+
+    // For Android 3.0+
+    public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
+        this.uploadFile = uploadFile;
+        openFileChooseProcess();
+    }
+
+    // For Android < 3.0
+    public void openFileChooser(ValueCallback<Uri> uploadMsgs) {
+        this.uploadFile = uploadFile;
+        openFileChooseProcess();
+    }
+
+    // For Android  > 4.1.1
+//    @Override
+    public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
+        this.uploadFile = uploadFile;
+        openFileChooseProcess();
+    }
+
+    // For Android  >= 5.0
+    @Override
+    public boolean onShowFileChooser(WebView webView,
+                                     ValueCallback<Uri[]> filePathCallback,
+                                     WebChromeClient.FileChooserParams fileChooserParams) {
+        this.uploadFiles = filePathCallback;
+        openFileChooseProcess();
+        return true;
+    }
+
+    private void openFileChooseProcess() {
+        Intent i = new Intent(Intent.ACTION_GET_CONTENT);
+        i.addCategory(Intent.CATEGORY_OPENABLE);
+        i.setType("image/*");
+        mActivity.startActivityForResult(Intent.createChooser(i, "Choose"), CHOOSE_REQUEST_CODE);
+    }
+
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (resultCode == Activity.RESULT_OK) {
+            switch (requestCode) {
+                case CHOOSE_REQUEST_CODE:
+                    if (null != uploadFile) {
+                        Uri result = data == null || resultCode != Activity.RESULT_OK ? null
+                                : data.getData();
+                        uploadFile.onReceiveValue(result);
+                        uploadFile = null;
+                    }
+                    if (null != uploadFiles) {
+                        Uri result = data == null || resultCode != Activity.RESULT_OK ? null
+                                : data.getData();
+                        uploadFiles.onReceiveValue(new Uri[]{result});
+                        uploadFiles = null;
+                    }
+                    break;
+                default:
+                    break;
+            }
+        } else if (resultCode == Activity.RESULT_CANCELED) {
+            if (null != uploadFile) {
+                uploadFile.onReceiveValue(null);
+                uploadFile = null;
+            }
+            if (null != uploadFiles) {
+                uploadFiles.onReceiveValue(null);
+                uploadFiles = null;
+            }
+        }
+    }
+}

app/src/main/java/com/nsgk/ruralWeb/FullscreenActivity.java

@@ -1,6 +1,7 @@
 package com.nsgk.ruralWeb;
 
 import android.annotation.SuppressLint;
+import android.content.Intent;
 import android.os.Bundle;
 import android.view.KeyEvent;
 import android.webkit.WebResourceRequest;
@@ -9,6 +10,7 @@ import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import android.widget.EditText;
 
+import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 
@@ -23,6 +25,8 @@ public class FullscreenActivity extends AppCompatActivity {
 
     private SensorManagerHelper sensorManagerHelper;
 
+    private BaseWebChromeClient chromeClient;
+
     @SuppressLint("SetJavaScriptEnabled")
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -33,10 +37,12 @@ public class FullscreenActivity extends AppCompatActivity {
         WebSettings settings = mWebView.getSettings();
         settings.setJavaScriptEnabled(true);
 
-        mWebView.setWebViewClient(new WebViewClient(){
+        this.setWebSettings(mWebView);
+
+        mWebView.setWebViewClient(new WebViewClient() {
             @Override
             public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
-                    return false;
+                return false;
             }
         });
         EditText textView = new EditText(this);
@@ -44,10 +50,12 @@ public class FullscreenActivity extends AppCompatActivity {
         AlertDialog alertDialog = new AlertDialog.Builder(this)
                 .setView(textView)
                 .setTitle("修改地址")
-                .setPositiveButton("确定", (dialogInterface, i) -> mWebView.loadUrl("http://"+textView.getText().toString()))
+                .setPositiveButton("确定", (dialogInterface, i) -> mWebView.loadUrl("http://" + textView.getText().toString()))
                 .create();
 
-        mWebView.loadUrl("http://116.255.135.38:86/authenticRight/login");
+        mWebView.loadUrl("http://116.255.135.38:89/homestead/login");
+        chromeClient = new BaseWebChromeClient(this);
+        mWebView.setWebChromeClient(chromeClient);
 
         sensorManagerHelper = new SensorManagerHelper(this);
         sensorManagerHelper.setOnShakeListener(alertDialog::show);
@@ -55,10 +63,39 @@ public class FullscreenActivity extends AppCompatActivity {
 
     @Override
     public boolean onKeyDown(int keyCode, KeyEvent event) {
-        if(keyCode == KeyEvent.KEYCODE_BACK && mWebView.canGoBack()){
+        if (keyCode == KeyEvent.KEYCODE_BACK && mWebView.canGoBack()) {
             mWebView.goBack();
             return true;
         }
         return super.onKeyDown(keyCode, event);
     }
+
+    public void setWebSettings(WebView mView) {
+        WebSettings setting = mView.getSettings();
+        //支持Js
+        setting.setJavaScriptEnabled(true);
+        setting.setJavaScriptCanOpenWindowsAutomatically(true);
+        //缓存模式
+        setting.setCacheMode(WebSettings.LOAD_DEFAULT);
+        //支持内容重新布局
+        setting.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN);
+        //将图片调整到适合webview的大小
+        setting.setUseWideViewPort(true);
+        setting.setLoadWithOverviewMode(true);
+        //设置可以访问文件
+        setting.setAllowFileAccess(true);
+        //支持自动加载图片
+        setting.setLoadsImagesAutomatically(true);
+        try {
+            setting.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
+        } catch (NoSuchMethodError e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+        chromeClient.onActivityResult(requestCode, resultCode, data);
+        super.onActivityResult(requestCode, resultCode, data);
+    }
 }

app/src/main/res/values/strings.xml

@@ -1,5 +1,5 @@
 <resources>
-    <string name="app_name">抽样调查</string>
+    <string name="app_name">两清三化</string>
     <string name="dummy_button">Dummy Button</string>
     <string name="dummy_content">DUMMY\nCONTENT</string>
 </resources>