android 內存等使用情況（转）

package com.gallery; import android.app.Activity; import android.app.ActivityManager; import android.os.Bundle; import android.widget.TextView; public class SystemProperty extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); } /** * 显示数据存库 */ private StringBuffer buffer; @Override protected void onStart() { super.onStart(); initProperty(); getMemoryInfo(); TextView tv = new TextView(this); tv.setText(buffer.toString()); this.setContentView(tv); } /** * 系统信息查看方法 */ private void initProperty() { initProperty("java.vendor.url", "java.vendor.url"); initProperty("java.class.path", "java.class.path"); initProperty("user.home", "user.home"); initProperty("java.class.version", "java.class.version"); initProperty("os.version", "os.version"); initProperty("java.vendor", "java.vendor"); initProperty("user.dir", "user.dir"); initProperty("user.timezone", "user.timezone"); initProperty("path.separator", "path.separator"); initProperty(" os.name", " os.name"); initProperty("os.arch", "os.arch"); initProperty("line.separator", "line.separator"); initProperty("file.separator", "file.separator"); initProperty("user.name", "user.name"); initProperty("java.version", "java.version"); initProperty("java.home", "java.home"); } private void initProperty(String description, String propertyStr) { if (buffer == null) { buffer = new StringBuffer(); } buffer.append(description).append("--->:"); buffer.append(System.getProperty(propertyStr)).append("/n"); getMemoryInfo(); } /** * 系统内存情况查看 */ private void getMemoryInfo() { final ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE); ActivityManager.MemoryInfo outInfo = new ActivityManager.MemoryInfo(); activityManager.getMemoryInfo(outInfo); buffer.append("/n剩余内存:---->").append(outInfo.availMem >> 10) .append("k"); buffer.append("/n剩余内存:---->").append(outInfo.availMem >> 20) .append("M"); buffer.append("/n是否处于低内存状态:----->").append(outInfo.lowMemory); } }

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