我试图使我的覆盖图像做以下事情：
单击/ondrag of map，在地图中间显示一个常量图像
那是一根针
Ontouchup，将标记图像更改为加载标记和一次数据
加载完全更改加载图像到新图像与文本。
我的问题有一个非常类似的解决方案：
到目前为止我做了什么？
在我的google地图中间放置一个imageview，然后
使用mMap.getCameraPosition().target
它使用setOnCameraChanged，我知道那是不赞成的，好吧，有更好的
解决方案？.
剩下的部分我不明白，虽然我读过一些问题，声称他们已经实现了它包装框架布局超过谷歌地图的片段，并应用ontouch上，但也找不到一个真正的答案。
我的XML片段中发生了所有这些事情，如下所示：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".fragments.MovableMapFragment">
<fragment
android:id="@+id/map_frag_fmm"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/tablayout_global_tabs"
android:layout_alignParentTop="true" />
<! -- long xml ahead -->
有人知道如何实现这种行为吗？
最佳答案
最好的解决方案是使用rxjava/rxandroid并使用它执行后台任务，但是我不能在没有看到代码的情况下使用rx发布解决方案，而且已经有一个来自@user27799的示例@manas chaudhari对逻辑提供了很好的解释（如下所示）。
//bunch of imports
import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
public class MapsActivity extends AppCompatActivity implements OnMapReadyCallback
{
private GoogleMap mGoogleMap;
private FrameLayout frameLayout, circleFrameLayout;
private ProgressBar progress;
private TextView textView;
private int circleRadius;
private boolean isMoving = false;
private SupportMapFragment mapFragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
initViews();
}
private void initViews() {
frameLayout = (FrameLayout) findViewById(R.id.map_container);
circleFrameLayout = (FrameLayout) frameLayout.findViewById(R.id.pin_view_circle);
textView = (TextView) circleFrameLayout.findViewById(R.id.textView);
progress = (ProgressBar) circleFrameLayout.findViewById(R.id.profile_loader);
mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
private void moveMapCamera() {
if (mGoogleMap == null) {
return;
}
CameraUpdate center = CameraUpdateFactory
.newLatLng(new LatLng(40.76793169992044, -73.98180484771729));
CameraUpdate zoom = CameraUpdateFactory.zoomTo(15);
mGoogleMap.moveCamera(center);
mGoogleMap.animateCamera(zoom);
}
@Override
public void onMapReady(GoogleMap googleMap) {
mGoogleMap = googleMap;
mGoogleMap.setOnCameraMoveStartedListener(new GoogleMap.OnCameraMoveStartedListener() {
/* User starts moving map - change your pin's image here
*/
@Override
public void onCameraMoveStarted(int i) {
isMoving = true;
textView.setVisibility(View.GONE);
progress.setVisibility(View.GONE);
Drawable mDrawable;
if (Build.VERSION.SDK_INT >= 21)
mDrawable = getApplicationContext().getResources().getDrawable(R.drawable.circle_background_moving, null);
else
mDrawable = getApplicationContext().getResources().getDrawable(R.drawable.circle_background_moving);
circleFrameLayout.setBackground(mDrawable);
resizeLayout(false);
}
});
/*User stoped moving map -> retrieve location and do your background task */
mGoogleMap.setOnCameraIdleListener(new GoogleMap.OnCameraIdleListener() {
@Override
public void onCameraIdle() {
isMoving = false;
textView.setVisibility(View.INVISIBLE);
progress.setVisibility(View.VISIBLE);
resizeLayout(true);
/* this is just an example that simulates data loading
you shoud substitute it with your logic
*/
new Handler().postDelayed(new Runnable() {
public void run() {
Drawable mDrawable;
if (Build.VERSION.SDK_INT >= 21)
mDrawable = getApplicationContext().getResources().getDrawable(R.drawable.circle_background, null);
else
mDrawable = getApplicationContext().getResources().getDrawable(R.drawable.circle_background);
if (!isMoving) {
circleFrameLayout.setBackground(mDrawable);
textView.setVisibility(View.VISIBLE);
progress.setVisibility(View.GONE);
}
}
}, 1500);
}
});
MapsInitializer.initialize(this);
moveMapCamera();
}
//resing circle pin
private void resizeLayout(boolean backToNormalSize){
FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) circleFrameLayout.getLayoutParams();
ViewTreeObserver vto = circleFrameLayout.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
circleFrameLayout.getViewTreeObserver().removeGlobalOnLayoutListener(this);
circleRadius = circleFrameLayout.getMeasuredWidth();
}
});
if (backToNormalSize) {
params.width = WRAP_CONTENT;
params.height = WRAP_CONTENT;
params.topMargin = 0;
} else {
params.topMargin = (int) (circleRadius * 0.3);
params.height = circleRadius - circleRadius / 3;
params.width = circleRadius - circleRadius / 3;
}
circleFrameLayout.setLayoutParams(params);
}
}
屏幕中央有插针的布局文件：
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map_container"
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.mapstest.MapsActivity" />
<FrameLayout
android:id="@+id/pin_view_line"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="@dimen/line_top_margin"
android:background="@drawable/line_background"/>
<FrameLayout
android:id="@+id/pin_view_circle"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/circle_background">
<TextView
android:id="@+id/textView"
android:layout_margin="@dimen/inner_circle_margin"
android:layout_width="@dimen/inner_circle_radius"
android:layout_height="@dimen/inner_circle_radius"
android:layout_gravity="top|center_horizontal"
android:gravity="center"
android:text="12 min"
android:textSize="@dimen/text_size"
android:textColor="@android:color/white"/>
<ProgressBar
android:id="@+id/profile_loader"
android:layout_margin="@dimen/inner_circle_margin"
android:layout_width="@dimen/inner_circle_radius"
android:layout_height="@dimen/inner_circle_radius"
android:indeterminate="true"
android:layout_gravity="top|center_horizontal"
android:visibility="gone"
android:contentDescription="@null"/>
</FrameLayout>
不移动时圈出背景：
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="@android:color/holo_green_dark"/>
<stroke
android:width="@dimen/stroke_width"
android:color="@android:color/black"/>
<size
android:width="@dimen/circle_radius"
android:height="@dimen/circle_radius"/>
</shape>
移动地图时圈出背景：
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="@android:color/black"/>
<size
android:width="@dimen/circle_radius"
android:height="@dimen/circle_radius"/>
</shape>
行背景文件：
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="@android:color/black"/>
<size
android:width="@dimen/line_width"
android:height="@dimen/line_height"/>
</shape>
尺寸：
<?xml version="1.0" encoding="utf-8"?>
<resources>
<dimen name="circle_radius">48dp</dimen>
<dimen name="line_width">4dp</dimen>
<dimen name="line_height">40dp</dimen>
<dimen name="stroke_width">4dp</dimen>
<dimen name="text_size">10sp</dimen>
<dimen name="inner_circle_radius">40dp</dimen>
<dimen name="inner_circle_margin">4dp</dimen>
<dimen name="line_top_margin">20dp</dimen>
</resources>
我希望它能帮助你，但是如果你有任何问题可以问，或者你看到了你需要改进的地方-编辑我的解决方案。
干杯。