他是我在这个网站上的第一个问题。我想知道是否在onMarker方法中，如果可能的话，更改线性布局的可见性元素。
这是我的活动，如果您使用按钮的事件单击，您可以更改元素的可见性。但是如果你使用onMarkerClick我无法改变它。我不知道它是否符合上下文。这样做有可能吗？抱歉，我的英文。
package com.example.ivan.myapplicationmaps;
import android.Manifest;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.Polyline;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.PolylineOptions;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import java.io.UnsupportedEncodingException;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import android.os.AsyncTask;
import org.json.JSONObject;
import android.view.Menu;
public class MainActivityDos extends FragmentActivity implements OnMapReadyCallback, GoogleMap.OnMarkerClickListener, View.OnClickListener {
private GoogleMap mMap;
// variables nuevas
private Button url_ruta;
//hasta aquí variables nuevas
private String origin;
private String destination;
private String point1;
private String point2;
//array de coordenadas
private String coordiantes;
private int n_points;
private String query;
private LinearLayout layoutBar, layoutButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_dos);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
layoutBar = (LinearLayout)findViewById(R.id.progressBarLayout);
layoutButton = (LinearLayout)findViewById(R.id.buttonsAudio);
url_ruta = (Button) findViewById(R.id.urlRuta);
url_ruta.setOnClickListener(this);
//coger lo que se envía en el intent;
Intent intent = getIntent();
Bundle bundle = intent.getExtras(); // estoy puede estar vacío
if(bundle != null){
//String rutaUrl = bundle.get("URL_RUTA").toString();
coordiantes = (bundle.get("COORDINATES").toString());
query = (bundle.get("QUERY").toString());
n_points = Integer.parseInt(bundle.get("POINTS").toString());
url_ruta.setText(query);
}
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
LatLng OriginPoint = new LatLng(40.408272, -3.694506);
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(OriginPoint, 16));
googleMap.setOnMarkerClickListener(this);
//mMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
mMap.setMyLocationEnabled(true);
sendRequest();
}
@Override
public boolean onMarkerClick(Marker marker) {
if(marker.getTitle().equals("punto1")){
Toast.makeText(getApplicationContext(), "hola" , Toast.LENGTH_LONG).show();
//layoutButton.setVisibility(View.VISIBLE); //this is no working.
//cambiarLayout();
//layoutBar.setVisibility(View.VISIBLE);
}
return false;
}
public void sendRequest(){
try{
//String url = createUrl();
DownloadTask downloadTask = new DownloadTask(mMap,coordiantes);
downloadTask.execute(query);
}catch (Exception e){
e.printStackTrace();
}
}
@Override
public void onClick(View view) {
layoutButton.setVisibility(View.VISIBLE); // this is working
layoutBar.setVisibility(View.VISIBLE);
}
}
//--------------------XML
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/activity_main_dos"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.ivan.myapplicationmaps.MainActivityDos"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1">
<Button
android:text="TextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Enter destination address"
android:id="@+id/urlRuta" />
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<LinearLayout
android:id="@+id/progressBarLayout"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:orientation="horizontal"
android:weightSum="1"
android:layout_above="@+id/buttonsAudio"
android:layout_alignParentStart="true"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:background="@color/wallet_bright_foreground_disabled_holo_light"
android:visibility="invisible">
<ProgressBar
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/progressBar"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:max="100"
android:progress="0"/>
</LinearLayout>
<LinearLayout
android:id="@+id/buttonsAudio"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:orientation="horizontal"
android:gravity="center"
android:weightSum="1"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:background="@color/wallet_bright_foreground_disabled_holo_light"
android:visibility="invisible">
<Button
android:text="Play"
android:id="@+id/buttonFragment"
android:layout_width="wrap_content"
android:layout_height="match_parent" />
<TextView
android:text="Museo reina sofia y atocha refe"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="@+id/textView"
android:textSize="20sp"
android:layout_weight="1"
android:layout_marginLeft="5dp" />
</LinearLayout>
</RelativeLayout>