android-activity

[Solved] Finishing activities A & B from activity B and go to activity C in android

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[ad_1] The better solution is, you should replace startActivity() with startActivityForResult() for activity transition. And from logout userActivity you just set a result and you will get onActivityResult in your mainActivity if you handle it properly.Then you can simply finish mainActivity. Refer https://developer.android.com/training/basics/intents/result.html Another way is finish MainActivity from its onResume, if the activity onResume … Read more

[Solved] switch a Button and Get a different at the Bottom

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[ad_1] Create a new Fragment that describes what you want to do in each pane. For example, import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class ButtonOneFragment extends Fragment { public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (container != null) { container.removeAllViews(); } return inflater.inflate(R.layout.button_one_fragment, container, false); } public … Read more

[Solved] Android app crashes by switching the activity

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[ad_1] Replace R.id.tvFeed with Framelayout’s id or default id android.R.id.content. if (savedInstanceState == null) { getFragmentManager().beginTransaction() .add(android.R.id.content, new PlaceholderFragment()) .commit(); } and remove the code from the onOptionsItemSelected() method. if (id == R.id.tvFeed) { return true; } [ad_2] solved Android app crashes by switching the activity

[Solved] Define a value to EditText

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[ad_1] Use this. If (edittext.getText().toString()==myPreProgrammedString){ start next activity } else{ show warning wrong password } Usually you would put something like this in a onClick method of a login button. But I use something similar in textwatchers afterTextChanged method to check if the entered text is in a list and then enable the OK button. … Read more

[Solved] what happens on returning previous activity?

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[ad_1] Activity A and Activity B, When you move from Activity A to Activity B the lifecycle is as follows Activity A ——————– onCreate() //A onStart() //A onResume() //A – here user can interact with UI(buttons,views), user click button and it moves to second activity onPause() //A ——————– onCreate() //Activity B onStart() //B onResume() //B … Read more

[Solved] Variables to next activity [duplicate]

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[ad_1] Pass value of string to Activity2: button.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { String a = editText.getText().toString(); String b = editText2.getText().toString(); Intent intent = new Intent(your_activity.this, Activity2.class); intent.putExtra(“a_value”, a); intent.putExtra(“b_value”, b); startActivity(intent); } }); Retrieve the value in 2nd Activity: public String user1; public String user2; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); … Read more

[Solved] How to access a HashMap from another class

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[ad_1] Either make the information available by using statics (not recommended), use some kind of database (could be as simple as a text file) or pass an Intent along with your Activity. A nice tutorial on adding information to an Intent is found here: http://startandroid.ru/en/lessons/complete-list/241-lesson-28-extras-passing-data-using-intent.html 0 [ad_2] solved How to access a HashMap from another … Read more

[Solved] Android Studio API 22 gives an error Unfortunately, “App Name” has stopped working after successful build [duplicate]

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[ad_1] Try removing the android prefix in <item name=”android:windowNoTitle”>true</item> i.e replace it with <item name=”windowNoTitle”>true</item>. Also replace <style name=”MyMaterialTheme.Base” parent=”Theme.AppCompat.Light.DarkActionBar”> with <style name=”MyMaterialTheme.Base” parent=”Theme.AppCompat”> , the Light.DarkActionBar part is unnecessary as you are specifying windowActionbar as false and windowNoTitle as true and setting action bar in activity. Also one more thing, ActionBarActivity is deprecated in … Read more

[Solved] What is an Activity in Android? [closed]

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[ad_1] Can anyone please explain what is exactly an ‘Activity’ means in Android ? An activity is your main “coarse” unit of user interface. It is roughly analogous to a screen, page, window, or other similar construct in other GUI environments. Or, to quote the documentation: An Activity is an application component that provides a … Read more

[Solved] How to create layout like in this image? [closed]

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[ad_1] Not sure is this what you want. You may try. <RelativeLayout xmlns:android=”http://schemas.android.com/apk/res/android” android:layout_width=”match_parent” android:layout_height=”wrap_content” android:orientation=”horizontal” android:gravity=”start” android:background=”@android:color/white” android:padding=”12dp”> <ImageView android:id=”@+id/image” android:layout_width=”80dp” android:layout_height=”70dp” android:layout_centerVertical=”true” android:layout_gravity=”left”/> <RelativeLayout android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:layout_toRightOf=”@+id/image” android:layout_centerVertical=”true” android:paddingLeft=”6dp” android:orientation=”vertical” android:layout_alignParentRight=”true” android:layout_alignParentEnd=”true”> <LinearLayout android:id=”@+id/ll1″ android:layout_width=”match_parent” android:layout_height=”wrap_content” android:orientation=”horizontal”> <TextView android:id=”@+id/name” android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:textSize=”18sp” android:text=”Depeche Mode” android:singleLine=”true” /> </LinearLayout> <LinearLayout android:id=”@+id/ll2″ android:layout_below=”@+id/ll1″ android:layout_width=”match_parent” android:layout_height=”wrap_content” android:orientation=”horizontal”> … Read more

[Solved] Exception on Date parsing android [duplicate]

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[ad_1] Your date format MM/dd/yyyy’T’HH:mm:ss which your using is incorrect 1/31/2018 8:58:12 AM +00:00 and return different value from expected. SimpleDateFormat sdf = new SimpleDateFormat(“MM/dd/yyyy’T’HH:mm:ss”); return 1/31/2018T8:58:12 And you are trying to pass below 1/31/2018 8:58:12 AM +00:00 1 [ad_2] solved Exception on Date parsing android [duplicate]

[Solved] How to handle a large number of activities in android studio

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[ad_1] No, you don’t need that many activities. You need to write abstract activities that take parameters and displays different data based on those. At most I see 4 activities here- department selector, semester selector, subject selector, and the actual subject activity. And arguably some of those should be fragments instead, although that’s more personal … Read more

[Solved] How to pass data from activity to class in android? [closed]

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[ad_1] Create a class for your requirement as CustomView and define public method to pass integer value and use it there. As I have created setIntValue(). public class CustomView extends View { private int mIntValue; public CustomView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public CustomView(Context context, AttributeSet attrs) { this(context, attrs, … Read more