package com.github.mo0n1andin.samples; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView; import android.widget.SimpleAdapter; import java.text.Collator; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.List; import java.util.Map; /** * @author WhatsAndroid */ public class LauncherActivity extends AppCompatActivity implements OnItemClickListener { private static final String TAG = "WhatsAndroid"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ListView listView = new ListView(this); setContentView(listView); Log.d(TAG, TAG + " task id: " + getTaskId()); Intent intent = getIntent(); String path = intent.getStringExtra(getPackageName() + ".Path"); if (path == null) { path = ""; } listView.setAdapter(new SimpleAdapter(this, getData(path), android.R.layout.simple_list_item_1, new String[]{"title"}, new int[]{android.R.id.text1})); listView.setTextFilterEnabled(true); listView.setOnItemClickListener(this); } protected List<Map<String, Object>> getData(String prefix) { List<Map<String, Object>> myData = new ArrayList<Map<String, Object>>(); Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); mainIntent.addCategory(Intent.CATEGORY_SAMPLE_CODE); PackageManager pm = getPackageManager(); List<ResolveInfo> list = pm.queryIntentActivities(mainIntent, 0); if (null == list) return myData; String[] prefixPath; String prefixWithSlash = prefix; if (prefix.equals("")) { prefixPath = null; } else { prefixPath = prefix.split("/"); prefixWithSlash = prefix + "/"; } int len = list.size(); Map<String, Boolean> entries = new HashMap<String, Boolean>(); for (int i = 0; i < len; i++) { ResolveInfo info = list.get(i); if (!getPackageName().equals(info.activityInfo.applicationInfo.packageName)) { continue; } CharSequence labelSeq = info.loadLabel(pm); String label = labelSeq != null ? labelSeq.toString() : info.activityInfo.name; if (prefixWithSlash.length() == 0 || label.startsWith(prefixWithSlash)) { String[] labelPath = label.split("/"); String nextLabel = prefixPath == null ? labelPath[0] : labelPath[prefixPath.length]; if ((prefixPath != null ? prefixPath.length : 0) == labelPath.length - 1) { addItem(myData, nextLabel, activityIntent( info.activityInfo.applicationInfo.packageName, info.activityInfo.name)); } else { if (entries.get(nextLabel) == null) { addItem(myData, nextLabel, browseIntent(prefix.equals("") ? nextLabel : prefix + "/" + nextLabel)); entries.put(nextLabel, true); } } } } Collections.sort(myData, sDisplayNameComparator); return myData; } private final static Comparator<Map<String, Object>> sDisplayNameComparator = new Comparator<Map<String, Object>>() { private final Collator collator = Collator.getInstance(); public int compare(Map<String, Object> map1, Map<String, Object> map2) { return collator.compare(map1.get("title"), map2.get("title")); } }; protected Intent activityIntent(String pkg, String componentName) { Intent result = new Intent(); result.setClassName(pkg, componentName); return result; } protected Intent browseIntent(String path) { Intent result = new Intent(); result.setClass(this, LauncherActivity.class); result.putExtra(getPackageName() + ".Path", path); return result; } protected void addItem(List<Map<String, Object>> data, String name, Intent intent) { Map<String, Object> temp = new HashMap<String, Object>(); temp.put("title", name); temp.put("intent", intent); data.add(temp); } @Override @SuppressWarnings("unchecked") public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Map<String, Object> map = (Map<String, Object>) parent.getItemAtPosition(position); Intent intent = new Intent((Intent) map.get("intent")); intent.addCategory(Intent.CATEGORY_SAMPLE_CODE); //intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); } }