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;
}
}