Question

这是我的热线片段代码。问题是它无法拨打电话。出现错误提示，如下所示：

错误：E / AndroidRuntime：致命异常：主要流程：com.example.julieridon.kabitenyo，PID：16445 java.lang.SecurityException：权限拒绝：启动Intent {act = android.intent.action.CALL dat = tel：xxx cmp = android / com.android.internal.app.ResolverActivity}来自 ProcessRecord {4bd5fc6 16445：com.example.julieridon.kabitenyo / u0a0} （pid = 16445，uid = 10000）具有撤消的权限 android.permission.CALL_PHONE 在android.os.Parcel.readException（Parcel.java:2021）在android.os.Parcel.readException（Parcel.java:1967）在android.app.IActivityManager $ Stub $ Proxy.startActivity（IActivityManager.java:4822）在android.app.Instrumentation.execStartActivity（Instrumentation.java:1619）在android.app.Activity.startActivityForResult（Activity.java:4621）在android.support.v4.app.FragmentActivity.startActivityForResult（FragmentActivity.java:767）在android.app.Activity.startActivityForResult（Activity.java:4579）在android.support.v4.app.FragmentActivity.startActivityForResult（FragmentActivity.java:754）在android.app.Activity.startActivity（Activity.java:4940）在android.app.Activity.startActivity（Activity.java:4908）在com.example.julieridon.kabitenyo.HotlinesActivity $ 1.onClick（HotlinesActivity.java:31）在android.view.View.performClick（View.java:6935）在android.widget.TextView.performClick（TextView.java:12742）在android.view.View $ PerformClick.run（View.java:26211）在android.os.Handler.handleCallback（Handler.java:790）在android.os.Handler.dispatchMessage（Handler.java:99）在android.os.Looper.loop（Looper.java:164）在android.app.ActivityThread.main（ActivityThread.java:7000）在java.lang.reflect.Method.invoke（本机方法）在com.android.internal.os.RuntimeInit $ MethodAndArgsCaller.run（RuntimeInit.java:441）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:1408）

热线片段代码：

public class HotlinesActivity extends Fragment {

@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.activity_hotlines, container, false);
    Button btnFragments = (Button) view.findViewById(R.id.call);
    btnFragments.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent callIntent = new Intent(Intent.ACTION_CALL);
            callIntent.setData(Uri.parse("tel:" + "123"));
            getActivity().startActivity(callIntent);
        }
    });
return view;
}
}

Answer 1

对于通话，您需要在AndroidManifest.xml中添加CALL_PHONE权限，例如

    <uses-permission android:name="android.permission.CALL_PHONE"/>

Android有两种权限，一种是普通权限，另一种是 DANGEROUS 权限。在Android 5.1.1及更低版本中，所有类型的权限都会自动授予。但是在Android 5.1.1及更高版本中，如果权限属于 DANGEROUS 类型，则我们需要要求用户授予权限。这样您就可以要求CALL许可

if (ContextCompat.checkSelfPermission(getContext(), Manifest.permission.CALL_PHONE) == PackageManager.PERMISSION_GRANTED) {
        Intent callIntent = new Intent(Intent.ACTION_CALL);
        callIntent.setData(Uri.parse("tel:" + "123"));
        getActivity().startActivity(callIntent);
    } else {
        ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.CALL_PHONE},
                CALL_PERMISSION_REQUEST_CODE);
    }

您可以使用 onRequestPermissionsResult 方法（如

）检查授予请求的结果

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if (requestCode == CALL_PERMISSION_REQUEST_CODE && grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
        Toast.makeText(getContext(), "Permission Granted", Toast.LENGTH_SHORT).show();
    }
}

完整代码可能如下

public class YourFragment extends Fragment {

    private static final int CALL_PERMISSION_REQUEST_CODE = 1234;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.activity_hotlines, container, false);
        Button btnFragments = (Button) view.findViewById(R.id.call);
        btnFragments.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                call();
            }
        });
        return view;
    }

    void call() {
        if (ContextCompat.checkSelfPermission(getContext(), Manifest.permission.CALL_PHONE) == PackageManager.PERMISSION_GRANTED) {
            Intent callIntent = new Intent(Intent.ACTION_CALL);
            callIntent.setData(Uri.parse("tel:" + "123"));
            getActivity().startActivity(callIntent);
        } else {
            ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.CALL_PHONE},
                    CALL_PERMISSION_REQUEST_CODE);
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == CALL_PERMISSION_REQUEST_CODE && grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            Toast.makeText(getContext(), "Permission Granted", Toast.LENGTH_SHORT).show();
        }
    }
}

如何分段拨打电话

1 个答案: