我想将String变量传递给另一个类并使用该String再次运行一个方法。
但是我无法传递该值并再次运行该方法。
我的应用程序从消息中获取纬度和经度，我想将该纬度和经度传递给我的地图类，并在地图视图中显示该位置。这是我的代码。
public class SMSRecevir extends BroadcastReceiver
{
String phonenumb="********";
@SuppressWarnings("UnnecessaryParentheses")
@Override
public void onReceive(Context context, Intent intent)
{
if(intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED"))
{
// Retrieves a map of extended data from the intent.
final Bundle bundle = intent.getExtras();
SmsMessage[] msgs = null;
String str = "";
try
{
if (bundle != null)
{
//---retrieve the SMS message received---
Object[] pdus = (Object[]) bundle.get("pdus");
msgs = new SmsMessage[pdus.length];
for (int i = 0; i < msgs.length; i++)
{
msgs[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
str += "SMS from " + msgs[i].getOriginatingAddress();
str += " :";
str += msgs[i].getMessageBody().toString();
str += "\n";
}
String replyPhone = msgs[0].getOriginatingAddress();
String request = msgs[0].getMessageBody().toString();
if(request.equals("lost")&& replyPhone.equals(phonenumb))
{
Uri alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE);
Ringtone ringtone = RingtoneManager.getRingtone(context, alarmUri);
ringtone.play();
for (int a=0;a<10;a++)
Toast.makeText(context, "!!!...Vechile Was Lost....!!!", Toast.LENGTH_SHORT).show();
}
else if (replyPhone.equals(phonenumb)){
Intent my =new Intent(SMSRecevir.this,MapsActivity.class);
my.putExtra("key",request);
startActivity(my);
}
}
}
catch (Exception e)
{
Log.e("MyReceiver", "Exception smsReceiver" +e);
}
}//close if
}
}
这是我其他班级的代码：
public class MapsActivity extends AppCompatActivity implements OnMapReadyCallback{
String phonenumber="********";
public double a=36.36548,b=81.66542;
private MapView mapView;
public GoogleMap gmap;
double lati;
double longi;
double aaa,bbb;
int v,bb;
char n= 'N';
char ar2[] = new char[30];
char ar3[] = new char[30];
String mg= "a";
private static final String MAP_VIEW_BUNDLE_KEY = "###########";
Button b1;
Button b2;
Button b3;
Button b4;
Button b5;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setLogo(R.drawable.ic_action_name);
getSupportActionBar().setDisplayUseLogoEnabled(true);
setContentView(R.layout.activity_main);
Bundle extras = getIntent().getExtras();
if (extras != null) {
String value3 = extras.getString("key");
mg = value3;
}
TextView t ;
t=(TextView) findViewById(R.id.textView);
t.setText(mg);
b1 = (Button) findViewById(R.id.find);
b2 = (Button) findViewById(R.id.out);
b3 = (Button) findViewById(R.id.in);
b4 = (Button) findViewById(R.id.off);
b5 = (Button) findViewById(R.id.call);
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phonenumber, null, "F", null, null);
}
});
b2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phonenumber, null, "O", null, null);
}
});
b3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phonenumber, null, "I", null, null);
}
});
b4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
b5.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phonenumber, null, "Call", null, null);
}
});
Bundle mapViewBundle = null;
if (savedInstanceState != null) {
mapViewBundle = savedInstanceState.getBundle(MAP_VIEW_BUNDLE_KEY);
}
mapView = findViewById(R.id.map);
mapView.onCreate(mapViewBundle);
mapView.getMapAsync(this);
}
@Override
public void onSaveInstanceState (Bundle outState){
super.onSaveInstanceState(outState);
Bundle mapViewBundle = outState.getBundle(MAP_VIEW_BUNDLE_KEY);
if (mapViewBundle == null) {
mapViewBundle = new Bundle();
outState.putBundle(MAP_VIEW_BUNDLE_KEY, mapViewBundle);
}
mapView.onSaveInstanceState(mapViewBundle);
}
@Override
protected void onResume () {
super.onResume();
mapView.onResume();
}
@Override
protected void onStart () {
super.onStart();
mapView.onStart();
}
@Override
protected void onStop () {
super.onStop();
mapView.onStop();
}
@Override
protected void onPause () {
mapView.onPause();
super.onPause();
}
@Override
protected void onDestroy () {
mapView.onDestroy();
super.onDestroy();
}
@Override
public void onLowMemory () {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
public void onMapReady (GoogleMap googleMap){
gmap = googleMap;
gmap.setMinZoomPreference(12);
gmap.setIndoorEnabled(true);
UiSettings uiSettings = gmap.getUiSettings();
uiSettings.setIndoorLevelPickerEnabled(true);
uiSettings.setMyLocationButtonEnabled(true);
uiSettings.setMapToolbarEnabled(true);
uiSettings.setCompassEnabled(true);
uiSettings.setZoomControlsEnabled(true);
if(mg != "a") {
char[] ar = mg.toCharArray();
int v;
for (v = 1; v < 11; v++) {
ar2[v] = ar[v];
}
for (v = 14; v < 25; v++) {
bb = 0;
ar3[v] = ar[v];
bb++;
}
String lat = new String(ar2);
String lon = new String(ar3);
lati = Double.valueOf(lat.trim()).doubleValue();
longi = Double.valueOf(lon.trim()).doubleValue();
lati = lati / 100;
longi = longi / 100;
a = lati;
b = longi;
LatLng ny = new LatLng(a,b);
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(ny);
gmap.addMarker(markerOptions);
gmap.moveCamera(CameraUpdateFactory.newLatLng(ny));
}
LatLng ny = new LatLng(a,b);
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(ny);
gmap.addMarker(markerOptions);
gmap.moveCamera(CameraUpdateFactory.newLatLng(ny));
}
}
我收到以下错误：
错误：
找不到合适的构造函数意图（SMSRecevir，班） 构造函数Intent.Intent（String，Uri）不适用
（参数不匹配; SMSRecevir无法转换为String）
构造函数Intent.Intent（Context，Class）不适用
（参数不匹配; SMSRecevir无法转换为上下文）
错误：类ContextCompat中的方法startActivity不能应用于给定类型;
必需：Context，Intent，Bundle
发现：意图
原因：实际和正式的参数列表长度不同
请帮帮我..
答案 0 :(得分：0)
您需要使用 context
试
Intent my =new Intent(context,MapsActivity.class);
my.putExtra("key",request);
context.startActivity(my);
在MapActivity中，
替换它
Bundle extras = getIntent().getExtras();
if (extras != null) {
String value3 = extras.getString("key");
mg = value3;
}
作为
String value3 = getIntent().getStringExtra("key");