android phone 6.0 对危险权限的判断

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    //android phone 6.0 对危险权限的判断    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {        int hasWriteContactsPermission;        hasWriteContactsPermission = checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE);        if (hasWriteContactsPermission != PackageManager.PERMISSION_GRANTED) {            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},                    CODE_FOR_WRITE_PERMISSION);        }    } else {        initAll();    }}
@Overridepublic void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, 
@NonNull int[] grantResults) {    if (requestCode == CODE_FOR_WRITE_PERMISSION) {        if (permissions[0].equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)                && grantResults[0] == PackageManager.PERMISSION_GRANTED) {            // 用户同意写文件            initAll();        } else {            // 用户不同意，自行处理即可            Toast.makeText(this, "你已经拒绝该权限", Toast.LENGTH_SHORT).show();        }    }}

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