我想通过从客户端创建params来创建rect和circle。我只能画其中一个。但我只能画出其中一个。在下面的代码我得到默认圈和我的矩形。 MainActivity.java
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
String colors[] = {"Red","Blue","White","Yellow","Black", "Green","Purple","Orange","Grey"};
EditText xc;
EditText yc;
EditText xr;
EditText yr;
EditText hr;
EditText wr;
EditText rc;
Spinner ColorC;
Spinner ColorR;
RelativeLayout display;
DrawShapes circle;
DrawShapes rect;
Button draw;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//circle
ColorC = (Spinner) findViewById(R.id.ColorSpinner0);
xc = (EditText) findViewById(R.id.xc);
yc = (EditText) findViewById(R.id.yc);
rc = (EditText) findViewById(R.id.rc);
//rect
ColorR = (Spinner) findViewById(R.id.ColorSpinner);
xr = (EditText) findViewById(R.id.xr);
yr = (EditText) findViewById(R.id.yr);
hr = (EditText) findViewById(R.id.hr);
wr = (EditText) findViewById(R.id.wr);
draw = (Button) findViewById(R.id.draw);
display = (RelativeLayout) findViewById(R.id.display);
draw.setOnClickListener(this);
ArrayAdapter<String> spinnerArrayAdapter0 = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, colors);
ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, colors);
spinnerArrayAdapter0.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
ColorC.setAdapter(spinnerArrayAdapter0);
ColorR.setAdapter(spinnerArrayAdapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onClick(View v) {
if ( xc.getText().toString().equals("") ||
yc.getText().toString().equals("") ||
rc.getText().toString().equals("") ||
xr.getText().toString().equals("") ||
yr.getText().toString().equals("") ||
wr.getText().toString().equals("") ||
hr.getText().toString().equals("")) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(R.string.errMsg);
builder.setTitle("Fields Require!");
builder.setPositiveButton("OK", null);
builder.create();
builder.show();
} else
createShapes();
}
//create shapes
public void createShapes(){
//circle
int x = Integer.parseInt(xc.getText().toString());
int y = Integer.parseInt(yc.getText().toString());
int rrr = Integer.parseInt(rc.getText().toString());
int cc =Color.parseColor(ColorC.getSelectedItem().toString());
circle = new DrawShapes(x,y,rrr,cc,this);
display.addView(circle);
//rect
int xx = Integer.parseInt(xr.getText().toString());
int yy = Integer.parseInt(yr.getText().toString());
int hh = Integer.parseInt(hr.getText().toString());
int ww = Integer.parseInt(wr.getText().toString());
int cr =Color.parseColor(ColorR.getSelectedItem().toString());
rect = new DrawShapes(xx,yy,xx+hh,yy+ww,cr,this);
display.addView(rect);
}
}
ShapesConst.java
package com.example.alexa.shapes;
import android.content.Context;
import android.graphics.Color;
import android.view.View;
public class ShapesConst extends View {
private int xc;
private int yc;
private int rc;
private int xr;
private int yr;
private int hr;
private int wr;
private int colorC;
private int colorR;
//default shapes
public ShapesConst(Context d) {
super(d);
xc = 200;
yc = 200;
rc = 150;
xr = 300;
yr = 300;
hr = 150;
wr = 250;
colorC = Color.BLUE;
colorR = Color.RED;
}
// circle shape
public ShapesConst(int xc, int yc, int r, int colorC, Context c) {
super(c);
this.xc = xc;
this.yc = yc;
this.rc = r;
this.colorC = colorC;
}
//rect shape
public ShapesConst(int xr, int yr, int hr, int wr, int colorR, Context rec) {
super(rec);
this.xr = xr;
this.yr = yr;
this.hr = hr;
this.wr = wr;
this.colorR = colorR;
}
//circle get
public int GetXC() {
return xc;
}
public int GetYC() {
return yc;
}
public int GetR() {
return rc;
}
public int GetColorC() {
return colorC;
}
//rect get
public int GetXR() {
return xr;
}
public int GetYR() {
return yr;
}
public int GetH() {
return hr;
}
public int GetW() {
return wr;
}
public int GetColorR() {
return colorR;
}
//circle set
public void setXC(int xc) {
this.xc = xc;
}
public void setYC(int yc) {
this.yc = yc;
}
public void setR(int r) {
this.rc = r;
}
public void setColorC(int colorC)
{
this.colorC = colorC;
}
//rect set
public void setXR(int xr) {
this.xr = xr;
}
public void setYR(int yr) {
this.yr = yr;
} public void setH(int h) {
this.hr = h;
} public void setW(int w) {
this.wr = w;
} public void setColorR(int colorR) {
this.colorR = colorR;
}
}
DrawShapes.java
public class DrawShapes extends ShapesConst {
//circle
public DrawShapes(int xc, int yc, int rc,int colorC,Context c) {
super(c);
setXC(xc);
setYC(yc);
setColorC(colorC);
setR(rc);
}
//rect
public DrawShapes(int xr, int yr, int hr, int wr, int colorR,Context r) {
super(r);
setXR(xr);
setYR(yr);
setH(hr);
setW(wr);
setColorR(colorR);
}
Paint paintC = new Paint();
Paint paintR = new Paint();
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawColor(Color.WHITE);
paintC.setColor(GetColorC());
paintR.setColor(GetColorR());
canvas.drawCircle(GetXC(), GetYC(), GetR(), paintC);
canvas.drawRect(GetXR(),GetYR(),GetXR()+GetYR(),GetW()+GetH(),paintR);
}
}
答案 0 :(得分：0)
非常糟糕的代码！
你有一个onDraw方法，它绘制一个矩形和一个圆圈？严重？
你有问题，也许你在另一个后面添加一个形状，你不使用canvas元素作为基础你使用RelativeLayout，为什么？