动态生成view并添加到布局开源框架：Dynamico
GitHub - jelic98/dynamico: Android library for inflating dynamic layouts in runtime based on JSON configuration fetched from server
第一种：ViewGroup在添加子view的时候设置layoutParams
public static View generalView(Activity context) { NestedScrollView scrollView = new NestedScrollView(context); //ScrollView加上android:fillViewport=“true”，当子view小于ScrollView高度时就会占满父View scrollView.setFillViewport(true); FrameLayout frameLayout = new FrameLayout(context); //控制视图背景 frameLayout.setBackgroundColor(context.getResources().getColor(android.R.color.background_dark, null)); GuiTextView titleTextView = new GuiTextView(context); titleTextView.setText(title); GuiTextView contentView = new GuiTextView(context); contentView.setText(text); //contentView.setMaxEms(30); GuiImageView imageView = new GuiImageView(context); imageView.setImageDrawable(context.getDrawable(R.mipmap.ic_car)); //RecyclerView GuiRecyclerView recyclerView = new GuiRecyclerView(context); GuiListAdapter listAdapter = new GuiListAdapter(); recyclerView.setAdapter(listAdapter); // 将控件加入到当前布局中 frameLayout.addView(titleTextView, ViewUtils.getLayoutParam(context,100, 20, 100, 10)); frameLayout.addView(contentView, ViewUtils.getLayoutParam(context,220, 120, 20, 50)); frameLayout.addView(imageView, ViewUtils.getLayoutParam(context,220, 124, 20, 180)); frameLayout.addView(recyclerView, ViewUtils.getLayoutParam(context,220, 120, 20, 320)); ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); scrollView.addView(frameLayout); return scrollView; }
第二种：子view本身设置layoutParams
public static View generalMediaView(Activity context) { NestedScrollView scrollView = new NestedScrollView(context); //ScrollView加上android:fillViewport=“true”，当子view小于ScrollView高度时就会占满父View scrollView.setFillViewport(true); FrameLayout frameLayout = new FrameLayout(context); //控制视图背景 frameLayout.setBackgroundColor(context.getResources().getColor(android.R.color.background_dark, null)); GuiTextView titleTextView = new GuiTextView(context); titleTextView.setText(title); titleTextView.setBackgroundColor(context.getResources().getColor(android.R.color.holo_orange_light, null)); FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(DisplayUtil.dip2px(context, 200), DisplayUtil.dip2px(context, 40)); layoutParams.setMargins(DisplayUtil.dip2px(context, 50), DisplayUtil.dip2px(context, 100), 0, 0); titleTextView.setLayoutParams(layoutParams); // 将控件加入到当前布局中 frameLayout.addView(titleTextView); scrollView.addView(frameLayout); return scrollView; }
DisplayUtil.java
public class DisplayUtil { public static int getScreenWidthByPix(Context context) { DisplayMetrics dm = context.getResources().getDisplayMetrics(); return dm.widthPixels; } public static int getScreenWidthByDp(Context context) { DisplayMetrics dm = context.getResources().getDisplayMetrics(); return (int) (dm.widthPixels / dm.density); } public static int getScreenHeightByPix(Context context) { DisplayMetrics dm = context.getResources().getDisplayMetrics(); return dm.heightPixels; } public static int getRealHeightByPix(Context context) { WindowManager mWindowManager = (WindowManager) context .getSystemService(Context.WINDOW_SERVICE); if (mWindowManager == null) { return getScreenHeightByPix(context); } Display mDisplay = mWindowManager.getDefaultDisplay(); DisplayMetrics mDisplayMetrics = new DisplayMetrics(); mDisplay.getRealMetrics(mDisplayMetrics); return mDisplayMetrics.heightPixels; } public static int getScreenHeightByDp(Context context) { DisplayMetrics dm = context.getResources().getDisplayMetrics(); return (int) (dm.heightPixels / dm.density); } /** * 根据手机的分辨率从 dp 的单位 转成为 px(像素) */ public static int dip2px(Context context, float dpValue) { final float scale = context.getResources().getDisplayMetrics().density; return (int) (dpValue * scale + 0.5f); } /** * 根据手机的分辨率从 px(像素) 的单位 转成为 dp */ public static int px2dip(Context context, float pxValue) { return px2dip(context, pxValue, true); } /** * 根据手机的分辨率从 px(像素) 的单位 转成为 dp * isUp 向上取整 */ public static int px2dip(Context context, float pxValue, boolean isUp) { final float scale = context.getResources().getDisplayMetrics().density; if (isUp) { return (int) (pxValue / scale + 0.5f); } else { return (int) (pxValue / scale); } } /** * 设置某个View的margin * * @param view 需要设置的view * @param isDp 需要设置的数值是否为DP * @param left 左边距 * @param right 右边距 * @param top 上边距 * @param bottom 下边距 * @return */ public static ViewGroup.LayoutParams setViewMargin(View view, boolean isDp, int left, int right, int top, int bottom) { if (view == null) { return null; } int leftPx = left; int rightPx = right; int topPx = top; int bottomPx = bottom; ViewGroup.LayoutParams params = view.getLayoutParams(); ViewGroup.MarginLayoutParams marginParams = null; //获取view的margin设置参数 if (params instanceof ViewGroup.MarginLayoutParams) { marginParams = (ViewGroup.MarginLayoutParams) params; } else { //不存在时创建一个新的参数 marginParams = new ViewGroup.MarginLayoutParams(params); } //根据DP与PX转换计算值 if (isDp) { leftPx = px2dip(view.getContext(), left); rightPx = px2dip(view.getContext(), right); topPx = px2dip(view.getContext(), top); bottomPx = px2dip(view.getContext(), bottom); } //设置margin marginParams.setMargins(leftPx, topPx, rightPx, bottomPx); view.setLayoutParams(marginParams); return marginParams; } @SuppressWarnings("deprecation") /** * 兼容4.0与4.1以上系统设置BackgroundDrawable方法不同 */ public static void setBackgroundDrawableCompat(View view, Drawable drawable) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) { view.setBackgroundDrawable(drawable); } else { view.setBackground(drawable); } } /** * 获取屏幕分辨率 * * @param context * @return */ public static String getStrScreenResolution(Application context) { DisplayMetrics dm = new DisplayMetrics(); WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); windowManager.getDefaultDisplay().getMetrics(dm);//display = getWindowManager().getDefaultDisplay();display.getMetrics(dm)（把屏幕尺寸信息赋值给DisplayMetrics dm）; int width = dm.widthPixels; int height = dm.heightPixels; return width + "*" + height; } /** * 获取 是否是平板设备 * * @param context * @return true:平板,false:手机 */ public static boolean isTabletDevice(Context context) { return (context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_LARGE; } /** * 修改屏幕当前亮度 * * @param context * @param brightness */ public static void setScreenBritness(Activity context, int brightness) { WindowManager.LayoutParams lp = context.getWindow().getAttributes(); lp.screenBrightness = Float.valueOf(brightness) * (1f / 255f); context.getWindow().setAttributes(lp); } /** * 获取系统亮度 * * @return */ public static int getSystemBrightness(Activity context) { int systemBrightness = 0; try { systemBrightness = Settings.System.getInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS); } catch (Settings.SettingNotFoundException e) { e.printStackTrace(); } return systemBrightness; } /** * 检测是否开启了自动亮度调整 * * @param activity * @return */ public static boolean isAutoBrightness(Activity activity) { try { int autoBrightness = Settings.System.getInt( activity.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE); if (autoBrightness == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC) { return true; } } catch (Settings.SettingNotFoundException e) { e.printStackTrace(); } return false; } /** * 关闭系统自动调节亮度 * * @param activity */ public static void closeAutoBrightness(Activity activity) { Settings.System.putInt(activity.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL); } /** * 打开自动调节亮度 * * @param activity */ public static void openAutoBrightness(Activity activity) { setScreenBritness(activity, -1); Settings.System.putInt(activity.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); } /** * 获取屏幕密度 */ public static int getPixelRation(Context context) { DisplayMetrics dm = context.getResources().getDisplayMetrics(); return dm.densityDpi; } }
ViewUtils.java
public class ViewUtils { public static FrameLayout.LayoutParams getLayoutParam(Context context, int width, int height, int startX, int startY) { int w = DisplayUtil.dip2px(context, width); int h = DisplayUtil.dip2px(context, height); int x = DisplayUtil.dip2px(context, startX); int y = DisplayUtil.dip2px(context, startY); FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(w, h); layoutParams.setMargins(x, y, 0, 0); return layoutParams; } }
