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public class DensityUtils {/*** dp转px*/public static int dp2px(Context ctx, float dp) {float density = ctx.getResources().getDisplayMetrics().density;//获取屏幕像素密度int px = (int) (dp * density + 0.5f);// 4.9->5 4.4->4return px;}public static float px2dp(Context ctx, int px) {float density = ctx.getResources().getDisplayMetrics().density;float dp = px / density;return dp;}}
<Viewandroid:id="@+id/view_red_point"android:layout_width="10dp"android:layout_height="10dp"android:background="@drawable/shape_point_red" />
// 初始化引导页的小圆点for (int i = 0; i < mImageIds.length; i++) {View point = new View(this);point.setBackgroundResource(R.drawable.shape_point_gray);// 设置引导页默认圆点- //这里面是像素dx，转换成dp
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(DensityUtils.dp2px(this, 10), DensityUtils.dp2px(this, 10));if (i > 0) {params.leftMargin = DensityUtils.dp2px(this, 10);// 设置圆点间隔}point.setLayoutParams(params);// 设置圆点的大小llPointGroup.addView(point);// 将圆点添加给线性布局}
public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);setBehindContentView(R.layout.left_menu);// 设置侧边栏SlidingMenu slidingMenu = getSlidingMenu();// 获取侧边栏对象slidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);// 设置全屏触摸int width = getWindowManager().getDefaultDisplay().getWidth();// 获取屏幕宽度slidingMenu.setBehindOffset(width * 200 / 320);// 设置预留屏幕的宽度，按比例initFragment();}
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原文地址：http://www.cnblogs.com/liuyu0529/p/4919352.html
