建立與設定面圖徵

建立與設定面圖徵

面圖徵之建立與設定，包括：地圖上加入面圖徵、設定面圖徵之邊框寬度及顏色等，並可動態修改面之顏色及邊框寬度，設面線圖徵程式範例如下：

public class MainActivity extends Activity implements OnSeekBarChangeListener{

RelativeLayout AddMapView;

TGOnlineMap _MapView = null;

TGPolygon polygon = null;

TGLatLng pt1 =  new TGLatLng(25.085599,121.772461);

TGLatLng pt2 = new TGLatLng(25.060721,121.442871);

TGLatLng pt3 =  new TGLatLng(24.746831,120.992432);

TGLatLng pt4 =  new TGLatLng(24.45215,120.800171);

TGLatLng pt5 =  new TGLatLng(24.026397,121.415405);

private static final int WIDTH_MAX = 50;

private static final int HUE_MAX = 360;

private static final int ALPHA_MAX = 255;

private SeekBar mColorBar;

private SeekBar mAlphaBar;

private SeekBar mWidthBar;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

AddMapView = (RelativeLayout)findViewById(R.id.AddMapView);

try {

_MapView = new TGOnlineMap(this);

_MapView.setBackgroundColor(Color.rgb(165,191,221));

AddMapView.addView(_MapView);

//Polygon 介面控制項----------------------------------------------------------

mColorBar = (SeekBar) findViewById(R.id.ColorBar);

mColorBar.setMax(HUE_MAX);

mColorBar.setProgress(0);

mAlphaBar = (SeekBar) findViewById(R.id.AlphaBar);

mAlphaBar.setMax(ALPHA_MAX);

mAlphaBar.setProgress(255);

mWidthBar = (SeekBar) findViewById(R.id.WidthBar);

mWidthBar.setMax(WIDTH_MAX);

mWidthBar.setProgress(10);

mColorBar.setOnSeekBarChangeListener(this);

mAlphaBar.setOnSeekBarChangeListener(this);

mWidthBar.setOnSeekBarChangeListener(this);

//--------------------------------------------------------------------------

int color = Color.HSVToColor(

mAlphaBar.getProgress(), new float[] {mColorBar.getProgress(), 1, 1});

polygon = _MapView.addPolygon(new TGPolygonOptions()  //建立Polygon

.add(pt1, pt2,pt3,pt4,pt5)  //坐標要用WGS84，依照頂點新增順序建立Polygon

.fillColor(color)

.strokeWidth(mWidthBar.getProgress()));

// Example 2: Polygon with two holes

TGPolygon polygonWithHoles = _MapView.addPolygon(new TGPolygonOptions()  //建立中空的Polygon

.add(new TGLatLng(24.4,119.0), new TGLatLng(24.4,121.0), new TGLatLng(23.0,121.0),new TGLatLng(23.0,120.0))//設定polygon

.addHoles(new TGLatLng(24.3,120.1), new TGLatLng(24.3,120.2)

, new TGLatLng(23.1,120.2),new TGLatLng(23.1,120.1))  //設定Holes，不同的Hole要用","分開

.fillColor(Color.argb(60, 0, 0, 255))  //設定顏色

.strokeWidth(1));  //設定邊框

} catch (TGRuntimeRemoteException e) {

e.printStackTrace();

}

}

@Override

public void onProgressChanged(SeekBar seekBar, int progress,

boolean fromUser) {

if (polygon == null) {

return;

}

if (seekBar == mColorBar) {  //可以動態修改顏色及邊寬

polygon.setFillColor(Color.HSVToColor(

Color.alpha(polygon.getFillColor()), new float[] {progress, 1, 1}));

} else if (seekBar == mAlphaBar) {

float[] prevHSV = new float[3];

Color.colorToHSV(polygon.getFillColor(), prevHSV);

polygon.setFillColor(Color.HSVToColor(progress, prevHSV));

} else if (seekBar == mWidthBar) {

polygon.setStrokeWidth(progress);

}

}

@Override

public void onStartTrackingTouch(SeekBar seekBar) {

}

@Override

public void onStopTrackingTouch(SeekBar seekBar) {

_MapView.invalidate(true);

}

}