package cn.zengfansheng.getCacheSize;
import java.lang.reflect.Method;
import android.app.Activity;
import android.content.Context;
import android.content.pm.IPackageStatsObserver;
import android.content.pm.PackageManager;
import android.content.pm.PackageStats;
import android.os.Bundle;
import android.os.RemoteException;
import android.text.format.Formatter;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends Activity {
private EditText et_package;
private TextView tv_cache;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
et_package = (EditText) this.findViewById(R.id.et_package);
tv_cache = (TextView) this.findViewById(R.id.tv_cache);
}
public void getCache(View view) {
// ApplicationPackageManager ap;//隐藏的类
PackageManager pm = this.getPackageManager();
/*
PackageManager隐藏的api
@hide
public abstract void getPackageSizeInfo(String packageName,
IPackageStatsObserver observer);
*/
try {
String packageName = et_package.getText().toString();
Method method = PackageManager.class.getMethod("getPackageSizeInfo", String.class,IPackageStatsObserver.class);
method.invoke(pm, packageName, new MyIPackageStatsbserver());
} catch (Exception e) {
e.printStackTrace();
}
}
private class MyIPackageStatsbserver extends IPackageStatsObserver.Stub {
// onGetStatsCompleted在另外的一个线程获取的数据. 所以不能直接更新ui
@Override
public void onGetStatsCompleted(PackageStats pStats, boolean succeeded)
throws RemoteException {
long cacheSize = pStats.cacheSize;
long codeSize = pStats.codeSize;
long dataSize = pStats.dataSize;
Context context = getApplicationContext();
String cache = Formatter.formatFileSize(getApplicationContext(), cacheSize);
String code = Formatter.formatFileSize(getApplicationContext(), codeSize);
String data = Formatter.formatFileSize(context, dataSize);
System.out.println("缓存大小：" + cache + "代码大小：" + code + "数据大小："+ data);
tv_cache.setText("缓存大小："+cache+"代码大小："+code+"数据大小："+data);
}
}
}
