当我第二次单击按钮时，我的折线不会消失

Question

我想发生的是，当我根据if条件在AutoCompleteTextView中键入某些内容并且当我第一次单击按钮时，程序将正确执行我的要求。

("正确">

的意思：阅读自动完成文本视图中的内容并正确执行"IF"条件(;

但是，当我第二次单击按钮时，将我在AutoCompleteTextView中键入的内容更改为另一个"IF"条件时，程序在传递第一个"if"条件时所做的标记和折线不会消失(不会被删除(;这种情况会发生无限次的按钮单击，只有第一个按钮单击被程序正确完成/读取。

我的地图就绪代码：

@Override
public void onMapReady(GoogleMap googleMap) {
map = googleMap;
//Position of Manila
LatLng manila = new LatLng(14.5995, 120.9842);
//adding details in Marker
MarkerOptions option = new MarkerOptions();
option.position(manila).title("Manila");
//adding marker in map
map.addMarker(option);
map.moveCamera(CameraUpdateFactory.newLatLng(manila));
//gotoLocation line
gotoLocationZoom(14.5995, 120.9842, 15);
//end gotoLocation line
//routes
apple();
banana();
cherry();
//markerclick
map.setOnMarkerClickListener(this);
}

我的onMarkerClick代码：(但我认为这无关紧要，因为我不做点击，但我认为你可能尽可能需要整个代码(

@Override
public boolean onMarkerClick(Marker marker) {
tag = marker.getTag().toString();
return false;
}

这是我的按钮点击代码：

public void onClick(View view){
AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.text_category);
if (textView.getText().toString().equals("apple")){
Toast.makeText(this, "This is my message", Toast.LENGTH_LONG).show();
//remove Lines
banana_line.remove();
cherry_line.remove();
//Remove Markers
banana_marker.remove();
cherry_marker.remove();
//Show Apple Marker and lines
apple();
} else if (textView.getText().toString().equals("banana")){
Toast.makeText(this, "This is my message", Toast.LENGTH_LONG).show();
//Remove Lines
apple_line.remove();
cherry_line.remove();
//Remove markers
apple_marker.remove();
cherry_marker.remove();
//Show banana Marker and lines
banana();
}else if (textView.getText().toString().equals("cherry")){
Toast.makeText(this, "This is my message", Toast.LENGTH_LONG).show();
//Remove Lines
apple_line.remove();
banana_line.remove();
//Remove Markers
apple_Marker.remove();
banana_Marker.remove();
//Add cherry Marker and Lines
cherry();
} else{
Toast.makeText(this, "Error no fruit like that", Toast.LENGTH_LONG).show();
}

这是我的示例折线和标记代码：

public void apple() {
LatLng apple = new LatLng(14.617071, 120.989945);
//All about the Marker
MarkerOptions appleMarkerOptions = new MarkerOptions();
appleMarkerOptions.position(apple);
appleMarkerOptions.title("Apple");
appleMarkerOptions.snippet("So yummy");
apple_marker = map.addMarker(appleMarkerOptions );
apple_marker.setTag("Apple");
//The Polylines
apple_line= map.addPolyline(new PolylineOptions().add(
new LatLng(14.617071, 120.989945),
new LatLng(14.605693, 121.000863),
new LatLng(14.605599, 121.000939),
new LatLng(14.603097, 121.001786),
new LatLng(14.602900, 121.001089),
new LatLng(14.605246, 121.000252),
new LatLng(14.613429, 120.992410),
new LatLng(14.611934, 120.990768),
new LatLng(14.617094, 120.985795)
)
.width(5)
.color(Color.RED)
);
public void banana(){
LatLng banana = new LatLng(14.612056, 120.995471);
//All about the Marker
MarkerOptions bananaMarkerOptions = new MarkerOptions();
bananaMarkerOptions .position(banana);
bananaMarkerOptions .title("Banana");
bananaMarkerOptions .snippet("I'm so yellow");
banana_marker = map.addMarker(bananaMarkerOptions );
banana_marker.setTag("Banana");
//The Polylines
banana_line = map.addPolyline(new PolylineOptions().add(
new LatLng(14.611319, 120.994752),
new LatLng(14.612855, 120.996404)
)
.width(5)
.color(Color.YELLOW)
);
}
public void cherry(){
//All about the Marker
LatLng cherry = new LatLng(14.612056, 120.995471);
MarkerOptions cherryMarkerOptions = new MarkerOptions();
cherryMarkerOptions.position(cherry);
cherryMarkerOptions.title("Cherry");
cherryMarkerOptions.snippet("Cherry delight");
//The Polylines
cherry_marker= map.addMarker(cherryMarkerOptions );
cherry_marker.setTag("Cherry");
cherry_line = map.addPolyline(new PolylineOptions().add(
new LatLng(14.612128, 120.995578),
new LatLng(14.614495, 120.998217)
)
.width(5)
.color(Color.GRAY)
);
}

Answer 1

我发现的解决方案是在所有嵌套的 if-else 语句中添加所有"_line.remove"。没有找到任何其他更简单/更短编码的解决方案。与此同时，我将把我的解决方案留在这里，直到我得到更好的解决方案。

//Remove lines
apple_line.remove();
banana_line.remove();
cherry_line.remove();
//Remove Markers
apple_marker.remove();
banana_marker.remove();
cherry_marker.remove();