通过PackageManager启动/卸载已安装的应用

AppInfo类

package example.com.viewtest.myview;

import android.app.Application;
import android.content.ComponentName;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.graphics.drawable.Drawable;
import android.util.Log;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
* Created by yzr on 16-2-5.
*/
public class AppInfo {
private  String activityName;
private  String pkgName;
private  String label;
private Drawable drawable;

public Drawable getDrawable() {
return drawable;
}

public String getActivityName() {
return activityName;
}

public String getLabel() {
return label;
}

public String getPkgName() {
return pkgName;
}

public Intent getIntent(){
Intent intent=new Intent();
intent.setComponent(new ComponentName(pkgName, activityName));
return  intent;
}
public   AppInfo(String activityName,String pkgName,String appLabel,Drawable drawable){
this.activityName=activityName;
this.pkgName=pkgName;
this.label=appLabel;
this.drawable=drawable;
}

@Override
public String toString() {
return  pkgName+"/"+activityName+":"+label;
}

public  static  ArrayList<AppInfo>getAppInfoList(PackageManager manager){

Intent intent=new Intent(Intent.ACTION_MAIN,null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);

List<ResolveInfo> resolveInfos=manager.queryIntentActivities(intent,PackageManager.MATCH_ALL);
Collections.sort(resolveInfos, new ResolveInfo.DisplayNameComparator(manager));

ArrayList<AppInfo>appInfoArrayList=new ArrayList<>();

for(ResolveInfo info :resolveInfos){
String activityName=info.activityInfo.name;
String pkgName=info.activityInfo.packageName;
String appLabel=(String)info.loadLabel(manager);
Drawable drawable=info.loadIcon(manager);
AppInfo appInfo=new AppInfo(activityName,pkgName,appLabel,drawable);
appInfoArrayList.add(appInfo);
}
return appInfoArrayList;
}

}

package example.com.viewtest.myview;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.List;

import example.com.viewtest.R;

/**
* Created by yzr on 16-2-5.
*/
public class AppAdapter extends ArrayAdapter <AppInfo>{

class  ViewHolder
{
ImageView icno;
TextView appName;
}
int resourceId;

public AppAdapter(Context context, int resource, List<AppInfo> objects) {
super(context, resource, objects);
this.resourceId=resource;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

AppInfo info=getItem(position);
View view;
ViewHolder holder;
if(convertView==null)
{
view= LayoutInflater.from(getContext()).inflate(resourceId,null);
holder=new ViewHolder();
holder.icno=(ImageView)view.findViewById(R.id.app_icon);
holder.appName=(TextView)view.findViewById(R.id.app_label);
view.setTag(holder);
}
else
{
view=convertView;
holder=(ViewHolder)view.getTag();
}
holder.icno.setImageDrawable(info.getDrawable());
holder.appName.setText(info.getLabel());

return  view;
}
}

package example.com.viewtest.ui;

import android.content.ComponentName;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;

import com.facebook.drawee.backends.pipeline.Fresco;
import com.facebook.drawee.view.SimpleDraweeView;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

import example.com.viewtest.R;
import example.com.viewtest.myview.AppAdapter;
import example.com.viewtest.myview.AppInfo;
import example.com.viewtest.service.LockService;

public class AppInfoActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.activity_fresco);
final PackageManager manager=getPackageManager();
List<AppInfo>list=AppInfo.getAppInfoList(manager);
ListView listView=(ListView)findViewById(R.id.list);
AppAdapter adapter=new AppAdapter(this,R.layout.app_item,list);
listView.setAdapter(adapter);

//点击启动应用
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
AppInfo info = (AppInfo) parent.getItemAtPosition(position);
Intent intent = info.getIntent();
startActivity(intent);
}
});

//长按删除应用
listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
AppInfo info = (AppInfo) parent.getItemAtPosition(position);
Uri uri = Uri.parse("package:" + info.getPkgName());
Intent intent = new Intent(Intent.ACTION_DELETE);
intent.setData(uri);
startActivity(intent);
return true;
}
});
}

}