JAVA俄罗斯方块Demo源码(毕业设计 课程设计)

package com.example.jinglion.gamedemo; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.TextView; import com.example.jinglion.gamedemo.elos.Elos; import java.util.ArrayList; import java.util.List; public class Square extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); PackageManager pm = getPackageManager(); Intent mainIntent = new Intent("SQUARE", null); mainIntent.addCategory("android.intent.category.SQUARE"); //返回给定条件的所有ResolveInfo对象(本质上是Activity)，集合对象 List<ResolveInfo> ls = pm.queryIntentActivities(mainIntent, 0); int i = 0; ArrayList<String> al = new ArrayList<String>(); setTitle(String.valueOf(ls.size())); while(i<ls.size()){ ResolveInfo ri = ls.get(i); al.add(ri.loadLabel(pm).toString()); i++; } ArrayAdapter<String> a = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,al); ListView lv = (ListView) this.findViewById(R.id.lv); lv.setAdapter(a); lv.setOnItemClickListener(new ItemClickListener()); } private class ItemClickListener implements AdapterView.OnItemClickListener{ @Override public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) { String strText = ((TextView)view).getText().toString(); if (strText == null) return; else if (strText.equals("俄罗斯方块")){ Intent in = new Intent(Square.this, Elos.class); startActivity(in); } } } }