适配Android 6、7、8、9、10期间遇到的坑

1、h5 https请求的图片加载不出来；https请求无法访问；

解决办法：

Webview里添加：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {mWebView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);}

Application里添加：

android:usesCleartextTraffic="true"

2、https无法抓包

参考：

https://blog.csdn.net/woyaochenggong774/article/details/80448698

原因：android权限的问题

修改方法：

在你主工程的res文件下新建xml（如果有直接可以用），在xml中创建net_security_config.xml

<?xml version="1.0" encoding="utf-8"?><network-security-config xmlns:android="http://schemas.android.com/apk/res/android">    <base-config cleartextTrafficPermitted="true">        <trust-anchors>            <certificates src="system" overridePins="true" />            <certificates src="user" overridePins="true" />        </trust-anchors>    </base-config></network-security-config>

在主工程AndroidManifest.xml中的application标签下添加

   android:networkSecurityConfig="@xml/net_security_config"

3、deviceId获取

https://developer.android.google.cn/training/articles/user-data-ids

采取谷歌推荐做法，自定义生成UUID：

@SuppressLint("ApplySharedPref")    public static String getDeviceId(Context context) {        SharedPreferences deviceIdSp = context.getApplicationContext()                .getSharedPreferences(DEVICE_ID_SP_NAME, Context.MODE_PRIVATE);        String deviceId = deviceIdSp.getString(DEVICE_ID_KEY, "");        if (TextUtils.isEmpty(deviceId)) {            deviceId = UUID.randomUUID().toString();            deviceIdSp.edit().putString(DEVICE_ID_KEY, deviceId).commit();        }        return deviceId;}

4、小米 mi8 Android 9.0上—onTouchEvent的action_up方法不走

解决办法：将手机系统升级到MIUI 11.0.4后问题解决。

5、Android 10上无法在sd上创建文件夹，动态申请过权限，sd卡状态为mounted，Android 9上一切正常

参考资料：
https://blog.csdn.net/yehui928186846/article/details/101706238

https://developer.android.google.cn/reference/android/os/Environment.html#getExternalStorageDirectory()

This method was deprecated in API level 29.
To improve user privacy, direct access to shared/external storage devices is deprecated. When an app targets Build.VERSION_CODES.Q, the path returned from this method is no longer directly accessible to apps. Apps can continue to access content stored on shared/external storage by migrating to alternatives such as Context#getExternalFilesDir(String), MediaStore, or Intent#ACTION_OPEN_DOCUMENT.

6、拍照及从相册选择图片的问题

参考资料：https://juejin.im/post/5d80ef726fb9a06aeb10f223

拍照必须使用file provider；

相册选取的图片不展示的问题：

解决方案：读取bitmap，将其压缩并存储在data/package_name/files 文件夹下，使用bitmapFactory.decodeFile加载bitmap展示在imageview上。

//获取图片Uriprivate static Uri getImageContentUri(Context context, String path) {        Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,                new String[]{MediaStore.Images.Media._ID}, MediaStore.Images.Media.DATA + "=? ",                new String[]{path}, null);        if (cursor != null && cursor.moveToFirst()) {            int id = cursor.getInt(cursor.getColumnIndex(MediaStore.MediaColumns._ID));            Uri baseUri = Uri.parse("content://media/external/images/media");            return Uri.withAppendedPath(baseUri, "" + id);        } else {            // 如果图片不在手机的共享图片数据库，就先把它插入。            if (new File(path).exists()) {                ContentValues values = new ContentValues();                values.put(MediaStore.Images.Media.DATA, path);                return context.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);            } else {                return null;            }        }} //读取bitmap，并压缩BitmapFactory.Options options = new BitmapFactory.Options();                options.inJustDecodeBounds = true;                 Uri imageUri = getImageContentUri(JDSendApp.getInstance(), srcFilePath);                ParcelFileDescriptor parcelFileDescriptor = context                        .getApplicationContext()                        .getContentResolver()                        .openFileDescriptor(imageUri, "r");                 BitmapFactory.decodeFileDescriptor(parcelFileDescriptor.getFileDescriptor(), null, options);                // 计算采样率                if (reqHeight == 0) {                    options.inSampleSize = calculateInSampleSize(options, reqWidth);                } else {                    options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);                }                // Decode bitmap with inSampleSize set                options.inJustDecodeBounds = false;                return BitmapFactory.decodeFileDescriptor(parcelFileDescriptor.getFileDescriptor(), null, options);