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PODifficulty in Launching Applications (simultaneously) installed through an Application
 

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    <p>I am new to android..Actually iam trying to increase the RAM Memory of android phone through my app..For that I had created an activity from which i could Launch the other applications present in our phone.This approach is sucessfully reducing RAM memory.But i am facing a difficulty,as i couldnot see the PARENT activity after the launch of the Application. I need to push the other activities (that are launched) to be run in the background as soon as it has been launch and always i need the Parent activity to be visible..</p> <pre><code>package com.android; import java.util.List; import android.app.Activity; import android.app.ActivityManager; import android.app.ActivityManager.MemoryInfo; import android.content.ActivityNotFoundException; import android.content.ComponentName; import android.content.Context; import android.content.ContextWrapper; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.os.Bundle; import android.os.Handler; import android.widget.LinearLayout; import android.widget.Toast; /** * GraphViewDemo creates some dummy data to demonstrate the GraphView component. * @author Arno den Hond **/ public class VsActivity extends Activity { /** * Variable Array for GraphView * verlabel : Background Height Values * horlabel : Background Width Values * values : Max Values of Foreground Active Graph */ private float[] values = new float[60]; long availableMegs; private String[] verlabels = new String[] { "500","450","400","350","300","250","200","150","100","50","0"}; private String[] horlabels = new String[] {"0","10", "20", "30", "40", "50", "60"}; private GraphView graphView; private LinearLayout graph; private boolean runnable = false; public static int datasend,test=0; int cnt=0; Activity activity = this.activity; static int count=0; @Override public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.main); graph = (LinearLayout)findViewById(R.id.graph); graphView = new GraphView(this, values, "TEST GRAPH", horlabels, verlabels, GraphView.LINE); graph.addView(graphView); runnable = true; startDraw.start(); } @Override public void onDestroy(){ super.onDestroy(); runnable = false; } public void setGraph(){ int i,j; count=count+10; try{ j=values.length-1; for(i=0; i&lt;values.length-1; i++){ values[i] = values[i+1]; } MemoryInfo mi = new ActivityManager.MemoryInfo(); ActivityManager activityManager = (ActivityManager) getApplicationContext() .getSystemService(ACTIVITY_SERVICE); activityManager.getMemoryInfo(mi); datasend= (int)((mi.availMem / 1048576)); values[values.length-1] = (float) datasend; graph.removeView(graphView); graph.addView(graphView); } catch (Exception e){ // e.printstacktrace(); } } private void launchComponent(String packageName, String name){ System.out.println("launch application "+datasend); Intent launch_intent = new Intent("android.intent.action.MAIN"); launch_intent.addCategory("android.intent.category.LAUNCHER"); launch_intent.setComponent(new ComponentName(packageName, name)); launch_intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); if(datasend &gt; 24){ System.out.println("launch application inside if "+packageName+" "+name); this.startActivity(launch_intent); } } public void startApplication(){ String application_name = ""; test=1; //ContextWrapper activity = this.activity; try{ System.out.println("Start application "); Intent intent = new Intent("android.intent.action.MAIN"); intent.addCategory("android.intent.category.LAUNCHER"); List&lt;android.content.pm.PackageInfo&gt; packageList; intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION); PackageManager pm = this.getPackageManager(); packageList = pm.getInstalledPackages(0); List&lt;ResolveInfo&gt; resolveinfo_list = pm.queryIntentActivities(intent, 0); for(ResolveInfo info:resolveinfo_list){ application_name = info.activityInfo.packageName; System.out.println(info.activityInfo.packageName+" "+info.activityInfo.name); //if(info.activityInfo.packageName.equalsIgnoreCase(application_name)){ launchComponent(info.activityInfo.packageName, info.activityInfo.name); // break; // } } } catch (ActivityNotFoundException e) { Toast.makeText(activity.getApplicationContext(), "There was a problem loading the application: "+application_name,Toast.LENGTH_SHORT).show(); } } public Handler handler = new Handler(){ @Override public void handleMessage(android.os.Message msg){ switch(msg.what){ case 0x01: setGraph(); // if(test == 0){ startApplication();//} break; } } }; public Thread startDraw = new Thread(){ @Override public void run(){ while(runnable){ handler.sendEmptyMessage(0x01); try{ MemoryInfo mi = new ActivityManager.MemoryInfo(); ActivityManager activityManager = (ActivityManager)getSystemService(ACTIVITY_SERVICE); activityManager.getMemoryInfo(mi); long ava = mi.availMem / 1048576L; //count=(int)ava; //System.out.println("SUDARHAN RAMAN "+ava+" "+count); Thread.sleep(1000); } catch (Exception e){ // e.printstacktrace(); } } } }; } </code></pre> <p>Here the GraphView is a View which will draw a Graph using Canvas.drawline(...) In the above code <strong>startapplication()</strong> will launch the child (application installed in our phone) activities..</p> <p>Plz help ...</p>
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