有人试过这个 API 吗?我正在开发一个特权系统应用程序来扫描网络。出于某种原因,当我尝试使用它时出现错误 2“错误参数”。授予应用 MODIFY_PHONE_STATE 权限,但仍然收到错误这是摘录:
public class ScannerActivity extends Activity implements View.OnClickListener {
private final int PHONE_STATE_REQUEST = 1;
private Button scanButton;
private TextView resultsTextView;
private class RadioCallback extends TelephonyScanManager.NetworkScanCallback {
private List<CellInfo> mCellInfoResults;
private int mScanError;
@Override
public void onResults(List<CellInfo> cellInfoResults) {
mCellInfoResults = cellInfoResults;
ScannerActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
for (CellInfo cellInfo:mCellInfoResults) {
resultsTextView.append(" " + cellInfo.toString() + " ");
}
}
});
}
@Override
public void onError(int error) {
mScanError = error;
ScannerActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
resultsTextView.append(" Error: " + mScanError);
}
});
}
@Override
public void onComplete() {
ScannerActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
resultsTextView.append(" Scan Completed! ");
}
});
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scanner);
scanButton = (Button) findViewById(R.id.scan_button);
scanButton.setOnClickListener(this);
resultsTextView = (TextView) findViewById(R.id.results_text_view);
}
public void onClick(View view) {
NetworkScanRequest networkScanRequest;
RadioAccessSpecifier radioAccessSpecifiers[];
int bands[];
ArrayList<String> PLMNIds = new ArrayList<String>(Arrays.asList("42501"));
TelephonyManager telephonyManager = (TelephonyManager) getApplicationContext()
.getSystemService(Context.TELEPHONY_SERVICE);
bands[0] = AccessNetworkConstants.UtranBand.BAND_1;
radioAccessSpecifiers = new RadioAccessSpecifier[1];
radioAccessSpecifiers[0] = new RadioAccessSpecifier(
AccessNetworkConstants.AccessNetworkType.UTRAN,
bands,
null);
networkScanRequest = new NetworkScanRequest(
NetworkScanRequest.SCAN_TYPE_ONE_SHOT,
radioAccessSpecifiers,
0,
60,
false,
0,
PLMNIds);
telephonyManager.requestNetworkScan(networkScanRequest, AsyncTask.SERIAL_EXECUTOR,new RadioCallback());
}
}
有谁知道我传递了哪些参数错误?我首先认为这可能是 LTE / 3G 问题,但对于 UTRAN 和 EUTRAN,我得到了相同的结果。
我还排除了 SIM 问题 - 例如,两个不同的 SIMS 都发生了相同的错误,它们都成功扫描了网络表单设置应用程序。