see 11/19 log

Author: Blankj

README-CN.md

@@ -380,11 +380,13 @@ execCmd : 是否是在root下执行命令
 
 > - **尺寸相关→[SizeUtils.java][size.java]**
  ```
-dp2px, px2dp     : dp与px转换
-sp2px, px2sp     : sp与px转换
-applyDimension   : 各种单位转换
-forceGetViewSize : 在onCreate()即可强行获取View的尺寸
-measureView      : ListView中提前测量View尺寸(注释萌萌哒)
+dp2px, px2dp      : dp与px转换
+sp2px, px2sp      : sp与px转换
+applyDimension    : 各种单位转换
+forceGetViewSize  : 在onCreate()中获取视图的尺寸
+measureView       : 测量视图尺寸
+getMeasuredWidth  : 获取测量视图宽度
+getMeasuredHeight : 获取测量视图高度
  ```
 
 > - **Snackbar相关→[SnackbarUtils.java][snackbar.java]→[Demo][snackbar.demo]**

app/src/main/java/com/blankj/androidutilcode/activities/LocationActivity.java

@@ -36,6 +36,8 @@ protected void onCreate(Bundle savedInstanceState) {
         tvAboutLocation = (TextView) findViewById(R.id.tv_about_location);
 
         locationUtils = new LocationUtils(App.getInstance());
+        //注意：此处更新准确度非常低，推荐在service里面启动一个Thread，在run中sleep(10000);
+        // 然后执行handler.sendMessage(),更新位置
         locationUtils.init(1000, 0, new LocationUtils.OnLocationChangeListener() {
             @Override
             public void onLocationChanged(Location location) {

update_log.md

@@ -1,4 +1,7 @@
 ###
+#### 16/11/19 SizeUtils
+#### 16/11/18 完善LocationUtils
+#### 16/11/17 完善LocationUtils
 #### 16/11/16 拼音工具类单独拎出来做了整理
 #### 16/11/15 完善正则工具类
 #### 16/11/14 新增启动服务

utilcode/src/main/java/com/blankj/utilcode/utils/LocationUtils.java

@@ -5,6 +5,9 @@
 import android.location.Address;
 import android.location.Criteria;
 import android.location.Geocoder;
+import android.location.GnssStatus;
+import android.location.GpsSatellite;
+import android.location.GpsStatus;
 import android.location.Location;
 import android.location.LocationListener;
 import android.location.LocationManager;
@@ -14,6 +17,7 @@
 import android.util.Log;
 
 import java.io.IOException;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Locale;
 
@@ -69,37 +73,39 @@ public void openGpsSettings() {
      * <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>}</p>
      * <p>参数1和2，如果参数2不为0，则以参数2为准；参数2为0，则通过时间来定时更新；两者为0，则随时刷新</p>
      *
+     * @param isUseOnce   是否只调用一次
      * @param minTime     位置信息更新周期（单位：毫秒）
      * @param minDistance 位置变化最小距离：当位置距离变化超过此值时，将更新位置信息（单位：米）
      * @param listener    位置刷新的回调接口
-     *
+     * @return {@code true}: 初始化成功<br>{@code false}: 初始化失败
      */
-    public void init(long minTime, long minDistance, OnLocationChangeListener listener) {
-        if (listener == null) return;
-        Location location;
-        String provider = mLocationManager.getBestProvider(getCriteria(), true); // 获取GPS信息
-        Location location = mLocationManager.getLastKnownLocation(provider); // 通过GPS获取位置
-
-
-        if (!mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER) && !mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
+    public boolean init(boolean isUseOnce, long minTime, long minDistance, OnLocationChangeListener listener) {
+        if (listener == null) return false;
+        mListener = listener;
+        if (!mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)
+                && !mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
             ToastUtils.showShortToastSafe(mContext, "无法定位，请打开定位服务");
             openGpsSettings();
         }
-        if (mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
-            // 通过网络获取定位（省电，但精确度略低）
-            location = mLocationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
-            if (location != null) {
-                listener.onLocationChanged(location);
-            }
-            mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, minTime, minDistance, myLocationListener);
-        } else if (mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
-            // 通过Gps获取定位（精确度高，但耗电）
-            location = mLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
+        if (!mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)
+                && !mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
+            return false;
+        }
+        String provider = mLocationManager.getBestProvider(getCriteria(), true);
+        Location location = mLocationManager.getLastKnownLocation(provider);
+        // 如果只调用一次
+        if (isUseOnce) {
             if (location != null) {
                 listener.onLocationChanged(location);
+                return true;
+            } else {
+                return false;
             }
-            mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, minTime, minDistance, myLocationListener);
         }
+        if (provider == null) return false;
+        // 以下是实时调用
+        mLocationManager.requestLocationUpdates(provider, minTime, minDistance, myLocationListener);
+        return true;
     }
 
     /**

utilcode/src/main/java/com/blankj/utilcode/utils/SizeUtils.java

@@ -5,6 +5,7 @@
 import android.util.Log;
 import android.util.TypedValue;
 import android.view.View;
+import android.view.ViewGroup;
 
 /**
  * <pre>
@@ -96,7 +97,7 @@ public static float applyDimension(int unit, float value, DisplayMetrics metrics
     }
 
     /**
-     * 在onCreate()即可强行获取View的尺寸
+     * 在onCreate()中获取视图的尺寸
      * <p>需回调onGetSizeListener接口，在onGetSize中获取view宽高</p>
      * <p>用法示例如下所示</p>
      * <pre>
@@ -136,30 +137,48 @@ public static void setListener(onGetSizeListener listener) {
     private static onGetSizeListener mListener;
 
     /**
-     * ListView中提前测量View尺寸，如headerView
-     * <p>用的时候去掉注释拷贝到ListView中即可</p>
-     * <p>参照以下注释代码</p>
+     * 测量视图尺寸
      *
      * @param view 视图
+     * @return arr[0]: 视图宽度, arr[1]: 视图高度
      */
-    public static void measureViewInLV(View view) {
-        Log.d("tips", "U should copy the following code.");
-        /*
-        ViewGroup.LayoutParams p = view.getLayoutParams();
-        if (p == null) {
-            p = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
-                    ViewGroup.LayoutParams.WRAP_CONTENT);
+    public static int[] measureView(View view) {
+        ViewGroup.LayoutParams lp = view.getLayoutParams();
+        if (lp == null) {
+            lp = new ViewGroup.LayoutParams(
+                    ViewGroup.LayoutParams.MATCH_PARENT,
+                    ViewGroup.LayoutParams.WRAP_CONTENT
+            );
         }
-        int width = ViewGroup.getChildMeasureSpec(0, 0, p.width);
-        int height;
-        int tempHeight = p.height;
-        if (tempHeight > 0) {
-            height = MeasureSpec.makeMeasureSpec(tempHeight,
-                    MeasureSpec.EXACTLY);
+        int widthSpec = ViewGroup.getChildMeasureSpec(0, 0, lp.width);
+        int lpHeight = lp.height;
+        int heightSpec;
+        if (lpHeight > 0) {
+            heightSpec = View.MeasureSpec.makeMeasureSpec(lpHeight, View.MeasureSpec.EXACTLY);
         } else {
-            height = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
+            heightSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
         }
-        view.measure(width, height);
-        */
+        view.measure(widthSpec, heightSpec);
+        return new int[]{view.getMeasuredWidth(), view.getMeasuredHeight()};
+    }
+
+    /**
+     * 获取测量视图宽度
+     *
+     * @param view 视图
+     * @return 视图宽度
+     */
+    public static int getMeasuredWidth(View view) {
+        return measureView(view)[0];
+    }
+
+    /**
+     * 获取测量视图高度
+     *
+     * @param view 视图
+     * @return 视图高度
+     */
+    public static int getMeasuredHeight(View view) {
+        return measureView(view)[1];
     }
 }