android运行时权限

Android 现在将所有的权限归成了两类，一类是普通权限，一类是危险权限。普通权限指的是那些不会直 接威胁到用户的安全和隐私的权限，对于这部分权限申请，系统会自动帮我们进行授权，而不需 要用户再去手动操作了。危险权限则 表示那些可能会触及用户隐私，或者对设备安全性造成影响的权限，如获取设备联系人信息、定 位设备的地理位置等，对于这部分权限申请，必须要由用户手动点击授权才可以，否则程序就无 法使用相应的功能。
下表列出了 Android 中所有的危险权限，一共是 9 组 24 个权限。
    CALENDAR
    READ_CALENDAR
    WRITE_CALENDAR

    CAMERA
    CAMERA

    CONTACTS
    READ_CONTACTS
    WRITE_CONTACTS
    GET_ACCOUNTS

    LOCATION
    ACCESS_FINE_LOCATION
    ACCESS_COARSE_LOCATION

    MICROPHONE
    RECORD_AUDIO

    PHONE
    READ_PHONE_STATE
    CALL_PHONE
    READ_CALL_LOG
    WRITE_CALL_LOG
    ADD_VOICEMAIL
    USE_SIP
    PROCESS_OUTGOING_CALLS

    SENSORS
    BODY_SENSORS

    SMS
    SEND_SMS
    RECEIVE_SMS
    READ_SMS
    RECEIVE_WAP_PUSH
    RECEIVE_MMS

    STORAGE
    READ_EXTERNAL_STORAGE
    WRITE_EXTERNAL_STORAGE

在程序运行时申请权限

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button makeCall = (Button) findViewById(R.id.make_call);
        makeCall.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
            if (ContextCompat.checkSetfPermission(MainActivity.this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
                    ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.CALL_PHONE}, 1);
                } else {
                    call();
                }
     }
        });
    }

    private void call() {
        try {
            Intent intent = new Intent(Intent.ACTION_CALL);
            intent.setData(Uri.parse("tel:10086"));
            startActivity(intent);
        } catch (SecurityException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        switch (requestCode) {
            case 1:
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    call();
                } else {
                    Toast.makeText(this, "You denied the permission", Toast.LENGTH_SHORT).show();
                }
                break;
            default:
        }
    }
}