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--- android:mem-leak [2011/10/21 16:32] – percy
+++ android:mem-leak [2016/05/05 13:07] (current) – external edit 127.0.0.1
@@ Line 45: / Line 45: @@
-====== 打印内存代码 ======
+======代码 ======
+===== 打印内存代码 =====
+<code lang="java">
+    private void printMemInfo(String TAG) {
+        TAG += ":meminfo";
+        logI(TAG, "printMemInfo:");
+        logI(TAG, "Max heap size = " + Runtime.getRuntime().maxMemory() / 1024 / 1024 + "M");
+        logI(TAG, "Allocate heap size = " + android.os.Debug.getNativeHeapAllocatedSize() / 1024 + "K");
+        Method _readProclines = null;
+        try {
+            Class procClass;
+            procClass = Class.forName("android.os.Process");
+            Class parameterTypes[] = new Class[]{String.class, String[].class, long[].class};
+            _readProclines = procClass.getMethod("readProcLines", parameterTypes);
+            Object arglist[] = new Object[3];
+            final String[] mMemInfoFields = new String[]{"MemTotal:", "MemFree:", "Buffers:", "Cached:"};
+            long[] mMemInfoSizes = new long[mMemInfoFields.length];
+            mMemInfoSizes[0] = 30;
+            mMemInfoSizes[1] = -30;
+            arglist[0] = new String("/proc/meminfo");
+            arglist[1] = mMemInfoFields;
+            arglist[2] = mMemInfoSizes;
+            if (_readProclines != null) {
+                _readProclines.invoke(null, arglist);
+                for (int i = 0; i < mMemInfoSizes.length; i++) {
+                    logI(TAG, mMemInfoFields[i] + " = " + mMemInfoSizes[i] / 1024 + "M");
+                }
+            }
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        } catch (SecurityException e) {
+            e.printStackTrace();
+        } catch (IllegalArgumentException e) {
+            e.printStackTrace();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        } catch (InvocationTargetException e) {
+            e.printStackTrace();
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+    }
+</code>
+===== unbindDrawables=====
+  unbindDrawables(activity.findViewById(R.id.root_view));
+  System.gc();
+<code>
+    /**
+     * Unbind all the drawables.
+     * @param view
+     */
+    private void unbindDrawables(View view) {
+        if (view != null) {
+            if (view.getBackground() != null) {
+                view.getBackground().setCallback(null);
+            }
+            if (view instanceof ViewGroup && !(view instanceof AdapterView)) {
+                for (int i = 0; i < ((ViewGroup) view).getChildCount(); i++) {
+                    unbindDrawables(((ViewGroup) view).getChildAt(i));
+                }
+                ((ViewGroup) view).removeAllViews();
+            }
+        }
+    }
+</code>