我有绘制线的示例代码。我需要逐点绘制线条来绘制运行时间。但是现在我在执行后只显示活动。但是,我需要开始活动并逐点显示线条。如何在运行时一步一步地在活动中绘制线位图
示例代码
public class MainActivity extends ActionBarActivity {
ImageView drawingImageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
drawingImageView = (ImageView) this.findViewById(R.id.DrawingImageView);
Bitmap bitmap = Bitmap.createBitmap((int) getWindowManager()
.getDefaultDisplay().getWidth(), (int) getWindowManager()
.getDefaultDisplay().getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
drawingImageView.setImageBitmap(bitmap);
// Line
Paint paint = new Paint();
paint.setColor(Color.rgb(255, 153, 51));
paint.setStrokeWidth(10);
int startx = 50;
int starty = 90;
int endx = 350;
int endy = 90;
while(endx>=startx) {
try {
Thread.sleep(5);
}catch (InterruptedException e){
e.printStackTrace();
}
canvas.drawLine(startx, starty, startx+1, endy, paint);
startx++;
}
}}
XML
<?xml version="1.0" encoding="utf-8"?>
<ImageView android:id="@+id/DrawingImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
欢迎您:-) –