android 內存等应用情況

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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