实现Android包的批量删除
16lz
2021-01-23
由于手机内存有限，有时需要一次删除很多个包，这时就需要一个实现Android包批量删除的应用。
首先是布局文件：
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <LinearLayout android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_weight="5" > <TextView android:id="@+id/textView1" style="@style/my_style" android:layout_width="match_parent" android:layout_height="fill_parent" android:layout_weight="4" /> <TextView android:id="@+id/textView2" style="@style/my_style" android:layout_width="match_parent" android:layout_height="fill_parent" android:layout_gravity="center_vertical|center_horizontal" android:layout_weight="1" android:gravity="center_vertical|center_horizontal" android:text="应用名称" /> <TextView android:id="@+id/textView3" android:layout_width="match_parent" android:layout_height="fill_parent" android:layout_weight="4" android:gravity="center_vertical|center_horizontal" android:text="是否系统应用" /> </LinearLayout> <ListView android:id="@id/android:list" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_weight="1" > </ListView> <Button android:id="@+id/btn_apk" style="@style/my_style" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_weight="5" android:text="卸载" /></LinearLayout>
布局文件相对简单，最重要的是列表。
然后是类文件：
package com.hzhi.sysinfor;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.app.AlertDialog;import android.app.ListActivity;import android.app.ProgressDialog;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.graphics.drawable.Drawable;import android.net.Uri;import android.os.Bundle;import android.util.Log;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.CheckBox;import android.widget.CompoundButton;import android.widget.CompoundButton.OnCheckedChangeListener;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.TextView;import android.widget.Toast;public class apk<PackageDeleteObserver> extends ListActivity{Button btn_unload;PackageManager pkg_man;PackageDeleteObserver pkg_obs;list_apk list_ada;// 获得所有的应用列表public void get_app(){ list_ada = new list_apk(this); // 包管理器PackageManager pm = getPackageManager();// 获取手机内所有应用List<PackageInfo> pi = pm.getInstalledPackages(0); for (int i=0; i<pi.size(); i++){PackageInfo pii = (PackageInfo) pi.get(i);String is_sys;Drawable icon;// 是否系统应用if ((pii.applicationInfo.flags & pii.applicationInfo.FLAG_SYSTEM) <= 0)is_sys = "否";elseis_sys = "是";if (pii.applicationInfo.loadIcon(pm) != null)icon = (Drawable)pii.applicationInfo.loadIcon(pm);elseicon = (Drawable) getResources().getDrawable(R.drawable.ic_launcher);list_ada.addItem(String.valueOf(pii.applicationInfo.loadLabel(pm)),is_sys, icon,pii.applicationInfo.packageName,false);} setListAdapter(list_ada);}@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_list_apk);get_app(); btn_unload = (Button) findViewById(R.id.btn_apk); btn_unload.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {for (int j=0; j<list_ada.list_data.size(); j++){// 该应用需要删除if (list_ada.list_data.get(j).is_chk){String name = (String) list_ada.list_data.get(j).
txt_name.getText();final String pak = list_ada.list_data.get(j).item_pak;new AlertDialog.Builder(apk.this).setTitle("删除应用").setMessage("确定删除" + name + "吗?").setPositiveButton("是",
new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1)
{unload(pak);get_app();}}).setNegativeButton("否", null).show();}}}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}public boolean unload (String n){boolean res = true;try{// 通过包名创建URIUri pu = Uri.parse("package:" + n);// 创建IntentIntent i = new Intent(Intent.ACTION_DELETE, pu);// 执行卸载程序startActivity(i);res = true;}catch(Exception e){res = false;}finally{return res;}}}//apk列表class list_apk extends BaseAdapter implements OnClickListener{ public Context ctx;public List<item_apk> list_data; public list_apk(Context context){ ctx = context;list_data = new ArrayList<item_apk>(); }@Overridepublic int getCount() {// TODO Auto-generated method stubreturn list_data.size();}@Overridepublic Object getItem(int arg0) { // TODO Auto-generated method stub return list_data.get(arg0);}@Overridepublic long getItemId(int arg0) { // TODO Auto-generated method stub return list_data.indexOf(arg0);}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {item_apk my_item; Integer i = 0; if (convertView == null) { my_item = new item_apk(ctx, (String)list_data.get(position).txt_name.getText(), (String)list_data.get(position).txt_flag.getText(), list_data.get(position).img_apk.getDrawable(), list_data.get(position).item_pak, list_data.get(position).is_chk); }else{ my_item = (item_apk)convertView; my_item.txt_name.setText(list_data.get(position).txt_name.getText());my_item.txt_flag.setText(list_data.get(position).txt_flag.getText());my_item.img_apk.setImageDrawable(list_data.get(position).img_apk.getDrawable());} CheckBox chk_item = (CheckBox) my_item.chk_apk;chk_item.setOnClickListener(this);if (list_data.get(position).is_chk)Log.i(String.valueOf(position) + ".is_chk=", "true");elseLog.i(String.valueOf(position) + ".is_chk=", "false");chk_item.setChecked(list_data.get(position).is_chk);chk_item.setTag(position);return my_item; } public void addItem(String txt_name, String txt_flag, Drawable ico_apk, String str_name, Boolean bol_chk){ list_data.add(new item_apk(ctx,txt_name,txt_flag,ico_apk,str_name,bol_chk)); }@Overridepublic void onClick(View v) {// TODO Auto-generated method stubCheckBox c = (CheckBox) v;int pos = Integer.parseInt(v.getTag().toString());list_data.get(pos).is_chk = c.isChecked();} }//apk列表的一行class item_apk extends LinearLayout{public CheckBox chk_apk;public TextView txt_name; public TextView txt_flag;public ImageView img_apk; public String item_pak;public boolean is_chk; public item_apk(Context ctx, String item_name, String item_flag, Drawable item_draw, String str_name, Boolean bol_chk){ super(ctx);this.setOrientation(HORIZONTAL);int hei = 60;chk_apk = new CheckBox(ctx);addView(chk_apk,new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.2),hei)); img_apk = new ImageView(ctx);img_apk.setImageDrawable(item_draw);addView(img_apk,new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.2),hei)); txt_name = new TextView(ctx);txt_name.setText(item_name);addView(txt_name,new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.4),hei)); txt_flag = new TextView(ctx);txt_flag.setText(item_flag);addView(txt_flag,new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.2),hei));item_pak = str_name;is_chk = bol_chk; }} 一共实现了三个类：apk、list_apk、item_apk。apk是整个Activity的类，list_apk是列表的适配器类，item_apk是列表中一行的类。list_apk的list_data是重要的变量，它记录了每一个包的信息，如包名、是否是系统应用、是否被选中等。
点击“卸载”按钮时，遍历list_data的所有元素，判断是否被选中，如果被选中，就删除。
运行效果如下:
可见，选中的两个包已经被删除。