安卓11读写文件适配:

安卓11需要增加管理所有文件权限:

    private static final int MANAGE_APP_ALL_FILES_ACCESS_PERMISSION_REQUEST_CODE = 0; // 申请管理app所有文件权限

    //1.判断系统版本,大于等于安卓11申请权限
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
      if (Environment.isExternalStorageManager()) {
      //TODO 安卓6.0多态申请权限
       } else {
        Intent intent = new Intent(Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION);
        intent.setData(Uri.parse("package:" + AppUtils.getAppPackageName()));
        startActivityForResult(intent, MANAGE_APP_ALL_FILES_ACCESS_PERMISSION_REQUEST_CODE);
        }
    } else {
       //TODO 安卓6.0多态申请权限
    }

    //2.申请管理app所有文件权限回调
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == MANAGE_APP_ALL_FILES_ACCESS_PERMISSION_REQUEST_CODE) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
                if (Environment.isExternalStorageManager()) {
                    //TODO 安卓6.0多态申请权限
                } else {
                    AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
                    builder.setTitle("温馨提醒");
                    builder.setMessage("当前应用需要读写权限,去设置?");
                    builder.setPositiveButton("设置", (DialogInterface dialog, int which) -> {
                        dialog.dismiss();
                        Intent intent = new Intent(Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION);
                        intent.setData(Uri.parse("package:" + AppUtils.getAppPackageName()));
                        startActivityForResult(intent, MANAGE_APP_ALL_FILES_ACCESS_PERMISSION_REQUEST_CODE);
                    });
                    builder.setNegativeButton("取消", (DialogInterface dialog, int which) -> {
                        dialog.dismiss();
                    });
                    builder.show();
                }
            }
        }
    }

2.安卓12 android:exported="true" 适配

gradle打包报错信息:
Manifest merger failed : android:exported needs to be explicitly specified for . Apps targeting Android 12 and higher are required to specify an explicit value for android:exported when the corresponding component has an intent filter defined. See https://developer.android.com/guide/topics/manifest/activity-element#exported for details.

解决方案: AndroidManifest.xml->application->下面四大组件全部都需要加以下节点

android:exported="true"
//或者
android:exported="false"