Question

在我的代码中，我要求：

        int permissionCheck = ContextCompat.checkSelfPermission(this, android.Manifest.permission.READ_PHONE_STATE);
        int permissionCheck1 = ContextCompat.checkSelfPermission(this, Manifest.permission.READ_CONTACTS);
        int permissionCheck2 = ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_CONTACTS);

        ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.READ_PHONE_STATE}, 0);
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_CONTACTS}, 1);
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_CONTACTS}, 2);

我还包括：

@Override
    public void onRequestPermissionsResult(int requestCode,
                                           String permissions[], int[] grantResults) {
        switch (requestCode) {
            case 0: {
                // If request is cancelled, the result arrays are empty.
                if (grantResults.length > 0
                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    // permission was granted, yay! Do the
                    // contacts-related task you need to do.
                } else {
                    ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.READ_PHONE_STATE}, 0);

                }
                return;
            }
            case 1: {
                // If request is cancelled, the result arrays are empty.
                if (grantResults.length > 0
                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    // permission was granted, yay! Do the
                    // contacts-related task you need to do.
                } else {
                    ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_CONTACTS}, 1);

                }
                return;
            }
            case 2: {
                // If request is cancelled, the result arrays are empty.
                if (grantResults.length > 0
                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    // permission was granted, yay! Do the
                    // contacts-related task you need to do.
                } else {
                    ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_CONTACTS}, 2);

                }
                return;
            }



            // other 'case' lines to check for other
            // permissions this app might request.
        }
    }

运行应用程序时，我首先收到请求，然后在不触摸任何内容的情况下，我的应用程序崩溃，并出现以下错误：

FATAL EXCEPTION: main
    Process: com.example.ortel.tagnet, PID: 28445
    java.lang.StackOverflowError: stack size 8MB
        at com.example.ortel.tagnet.MainActivityOld.onRequestPermissionsResult(MainActivityOld.java:894)
        at android.app.Activity.requestPermissions(Activity.java:4455)
        at android.support.v4.app.ActivityCompat.requestPermissions(ActivityCompat.java:507)
        at com.example.ortel.tagnet.MainActivityOld.onRequestPermissionsResult(MainActivityOld.java:894)
        at android.app.Activity.requestPermissions(Activity.java:4455)
        at android.support.v4.app.ActivityCompat.requestPermissions(ActivityCompat.java:507)
        at com.example.ortel.tagnet.MainActivityOld.onRequestPermissionsResult(MainActivityOld.java:894)
        at android.app.Activity.requestPermissions(Activity.java:4455)
        at android.support.v4.app.ActivityCompat.requestPermissions(ActivityCompat.java:507)
        at com.example.ortel.tagnet.MainActivityOld.onRequestPermissionsResult(MainActivityOld.java:894)

对于您的信息，（MainActivityOld.java:894）是

ActivityCompat.requestPermissions（此为新 String [] {android.Manifest.permission.READ_PHONE_STATE}，0）；

发生了什么事？看来它一直在打电话给我。

它不应该等待我的回答吗？

编辑： 。如果您不知道为什么会发生，请说明。

Answer 1

您可以尝试一次调用Activity.requestPermissions来请求所有权限，并输入具有您需要询问的所有3个权限的String []，在您的代码中，您实际上是在通过3种不同的对话框提示系统要求这些权限作为单独的实体，也许在执行第二个权限请求时，它会覆盖第一个权限请求，并创建一个生成StackOverflowException的循环。

示例：

List <String> str = new ArrayList <> ();
if (ContextCompat.checkSelfPermission(context, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
    str.add(Manifest.permission.READ_PHONE_STATE);
}
if (ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
    str.add(Manifest.permission.ACCESS_COARSE_LOCATION);
}
if (ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
    str.add(Manifest.permission.ACCESS_FINE_LOCATION);
}
if (ContextCompat.checkSelfPermission(context, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
    str.add(Manifest.permission.READ_EXTERNAL_STORAGE);
}
if (ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
    str.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
}
if (str.size() > 0) {
    String[]strings = new String[str.size()];
    str.toArray(strings);
    ActivityCompat.requestPermissions(StartActivity.this,
        strings,
        PERMISSION_CODE_STATE);
}

然后在接收结果的回调中检查您是否收到了所有类似的权限，或者手动检查每个grantResult： boolean gotPermissions = true;

for (int i : grantResults) {
    if (i != PackageManager.PERMISSION_GRANTED) {
        gotPermissions = false;
        break;
    }
}

Answer 2

尝试这个。

int PERMISSION_ALL = 1;
String[] PERMISSIONS = {
  Manifest.permission.WRITE_EXTERNAL_STORAGE,
  ...add your permissions.
};

在您的onCreate中添加它。

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
  if(!hasPermissions(this, PERMISSIONS)) {
    ActivityCompat.requestPermissions(this, PERMISSIONS, PERMISSION_ALL);
  }
}

这是您的权限功能。

public boolean hasPermissions(Context context, String... permissions) {
    if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && context != null && permissions != null) {
      for (String permission : permissions) {
        if (ActivityCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
          return false;
        }
      }
    }
    return true;
  }

此代码将一步一步检查您的所有权限。但是如果有人拒绝了许可。期望您的应用会在需要该权限时崩溃。

Answer 3

请参见this answer。

您遇到一个无限循环，我猜这是由于有人拒绝“位置”权限而导致的，并选中了“永不询问”复选框

onRequestPermissionsResult中的java.lang.StackOverflowError（Android）

3 个答案: