ChiziActivity.java:
package nate.dlnu;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.View;
import android.widget.TextView;
public class ChiziActivity extends Activity {
/** Called when the activity is first created. */
private CanvasView canvasView;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
DisplayMetrics metric = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metric);
// float sw=metric.widthPixels;//获取手机分辨率
// float sh=metric.heightPixels;
float densityDpi = metric.densityDpi;//160,240,320
float density = metric.density; //1,1.5,2;
System.out.println(density+"/"+densityDpi);
canvasView=new CanvasView(this,densityDpi);
setContentView(canvasView);
}
}
class CanvasView extends View {
public float d;
public int i;
public CanvasView(Context context,float d1) {
super(context);
setFocusable(true);
setFocusableInTouchMode(true);
d=d1;
}
public void onDraw(Canvas canvas) {
Paint paint = new Paint();
// 设置颜色
paint.setColor(Color.WHITE);
// 设置样式-填充
//paint.setStyle(Style.FILL);
canvas.drawRect(new Rect(0, 0, 5000, 5000), paint);
// 设置颜色
paint.setColor(Color.BLUE);
// 绘文字
float dy=0.04f*d;
for(i=1;i<=30;i++){
canvas.drawText(i+"", 70, i*dy*10, paint);
canvas.drawLine(0, i*dy*10, 70, i*dy*10, paint);
canvas.drawLine(0, i*dy*5, 50, i*dy*5, paint);
}
for(i=0;i<300;i++){
canvas.drawLine(0, i*dy, 30, i*dy, paint);
}
}
}