MainActivity.java
package com.example.androiddynamicview;
import java.util.ArrayList;
import android.support.v7.app.ActionBarActivity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
public class MainActivity extends ActionBarActivity {
EditText textIn;
Button buttonAdd;
LinearLayout container;
ArrayList<CharSequence> itemList;
String TAG = "AndroidDynamicView";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.i(TAG, "onCreate()");
textIn = (EditText) findViewById(R.id.textin);
buttonAdd = (Button) findViewById(R.id.add);
container = (LinearLayout) findViewById(R.id.container);
itemList = new ArrayList<CharSequence>();
buttonAdd.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
addNewView(textIn.getText().toString());
}
});
}
@Override
protected void onSaveInstanceState(Bundle outState) {
// TODO Auto-generated method stub
super.onSaveInstanceState(outState);
Log.i(TAG, "onSaveInstanceState()");
outState.putCharSequenceArrayList("KEY_ITEMS", itemList);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onRestoreInstanceState(savedInstanceState);
Log.i(TAG, "onRestoreInstanceState()");
ArrayList<CharSequence> savedItemList = savedInstanceState.getCharSequenceArrayList("KEY_ITEMS");
if(savedItemList != null){
for(CharSequence s : savedItemList){
addNewView(s);
}
}
}
private void addNewView(final CharSequence newText){
LayoutInflater layoutInflater = (LayoutInflater) getBaseContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View newView = layoutInflater.inflate(R.layout.row, null);
TextView textOut = (TextView) newView
.findViewById(R.id.textout);
textOut.setText(newText);
Button buttonRemove = (Button) newView
.findViewById(R.id.remove);
buttonRemove.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
((LinearLayout) newView.getParent())
.removeView(newView);
itemList.remove(newText);
}
});
container.addView(newView);
itemList.add(newText);
}
}
/res/layout/activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.androiddynamicview.MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:autoLink="web"
android:text="http://android-er.blogspot.com/"
android:textStyle="bold" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<Button
android:id="@+id/add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:text="Add" />
<EditText
android:id="@+id/textin"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="@id/add" />
</RelativeLayout>
<LinearLayout
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
</LinearLayout>
</LinearLayout>
/res/layout/row.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<Button
android:id="@+id/remove"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:text="Remove" />
<TextView
android:id="@+id/textout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="@id/remove" />
</RelativeLayout>
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1 comment:
Hello,
I got question. You have done great job. I was trying to work with your code and got some success but I can't figure it out how to do this for multiple text view to look like:
what I was able to achieve is after rotation of screen:
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