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122025  이전 다음

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이상하게 구글링을 통해 얻은 많은 예제들이 동작하지 않아, AsynckTask를 통한 URL ImageView를 구현하였다.
MainActivity.java

public class MainActivity extends Activity{

	@Override
	protected void onCreate(Bundle savedInstanceState) {
new DownloadImageTask((ImageView) findViewById(R.id.img_test)).execute("URL");
}

}


DownloadImageTask.java

public class DownloadImageTask extends AsyncTask {

	ImageView bmImage;

	public DownloadImageTask(ImageView bmImage) {
		this.bmImage = bmImage;
	}

	@Override
	protected Bitmap doInBackground(String... urls) {
		String urlDisplay = urls[0];
		Log.e("hong", "urls : " + urls[0]);
		Bitmap mIcon11 = null;
		try {
			InputStream in = new java.net.URL(urlDisplay).openStream();
			mIcon11 = BitmapFactory.decodeStream(in);
		} catch (Exception e) {
			Log.e("hong", "error : " + e.getMessage());
			e.printStackTrace();
		}
		return mIcon11;
	}

	@Override
	protected void onPostExecute(Bitmap result) {
		bmImage.setImageBitmap(result);
	}

}
이렇게하니 되더라!
Posted by 초코렛과자
|

안드로이드에서 AlertDialog에 ListView를 띄우는 예제 

참고 블로그 - http://yuihorie1004.tistory.com/8



1. String.xml 


<?xml version="1.0" encoding="utf-8"?>

<resources>


    <string name="app_name">ListViewDialog</string>

    <string name="hello">ListView Test</string>

    <string name="action_settings">Settings</string>


    <!-- ListDialog를 위한 string -->

<string name="list_dialog_title">선택하세요..</string>

<string-array name="list_dialog_list_item">

<item>item select one...</item>

<item>item select two...</item>

<item>item select three...</item>

<item>item select four...</item>

</string-array>

    

</resources>


2. main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/LinearLayout1"

    android:layout_width="fill_parent"

    android:layout_height="fill_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.listviewdialog.MainActivity" >


    <TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/hello" />

    

<Button android:id="@+id/btn_list_dialog"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="Button List Dialog">

</Button>

    


</LinearLayout>


3. MainActivity.java

package com.example.listviewdialog;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ListView;


public class MainActivity extends Activity implements OnClickListener{

private static final String TAG = "hong";
private Button mBtnListDialog;
private ListViewDialog mDialog;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViews();
    }

private void findViews() {
mBtnListDialog = (Button)findViewById(R.id.btn_list_dialog);
mBtnListDialog.setOnClickListener(this);
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_list_dialog:
Log.d(TAG, "click button list dialg...");
showListDialog();
break;

default:
break;
}
}

private void showListDialog() {
String[] item = getResources().getStringArray(R.array.list_dialog_list_item);
//array를 ArrayList로 변경하는 방법
List<String> listitem = Arrays.asList(item);
ArrayList<String> itemArrayList = new ArrayList<String>(listitem);
mDialog = new ListViewDialog(this, getString(R.string.list_dialog_title), itemArrayList);
mDialog.onOnSetItemClickListener(new ListViewDialogSelectListener() {
@Override
public void onSetOnItemClickListener(int position) {
if(position == 0){
Log.d(TAG, "first index selected");
}
mDialog.dismiss();
}
});
mDialog.show();
}
}

DB에서 값을 받아 ArrayList에 저장 한 후 showListDialog를 호출하면서 넘겨주는 방법으로 itemArrayList를 구성할 수 도 있다. 그렇게 되면 

String[] item = getResources().getStringArray(R.array.list_dialog_list_item);
List<String> listitem = Arrays.asList(item);

이 두줄의 코드는 없어져도 된다.

4. ListViewDialog.java

package com.example.listviewdialog;

import java.util.ArrayList;

import android.app.Dialog;
import android.content.Context;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class ListViewDialog extends Dialog{

private static final String TAG = "hong";
private ListViewDialogSelectListener mListener;
private Context mContext;
private ArrayList<String> mStrListItem;
private ListView mListView;
public ListViewDialog(Context context, String title, ArrayList<String> item) {
super(context);
setContentView(R.layout.list_view_dialog);
mContext = context;
findViews();
setTitle(title);
mStrListItem = item;
createListViewDialog();
}
private void createListViewDialog() {
ArrayAdapter<String> adapter = new ArrayAdapter<String>(mContext, android.R.layout.simple_list_item_1, mStrListItem);
mListView.setAdapter(adapter);
mListView.setOnItemClickListener(new OnItemClickListener() {

@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
Log.d(TAG, "list index = [" + arg2 + "]");
mListener.onSetOnItemClickListener(arg2);
}
});
}

private void findViews() {
mListView = (ListView) findViewById(R.id.list_view_dialog);
}

public void onOnSetItemClickListener(ListViewDialogSelectListener listener) {
mListener = listener;
}

}

5. ListViewDialogSelectListener.java

package com.example.listviewdialog;

public interface ListViewDialogSelectListener {

public void onSetOnItemClickListener(int position);
}


Posted by 초코렛과자
|

MainActivity 부분


onCreate(){

String URL = "이미지주소";

new DownloadImageTask((ImageView)findViewById(R.id.imageView)).execute(URL);

}


DownloadImageTask.java 부분



public class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {


ImageView bmImage;

public DownloadImageTask(ImageView bmImage) {

this.bmImage = bmImage;

}

@Override

protected Bitmap doInBackground(String... urls) {

String urlDisplay = urls[0];

Bitmap mIcon11 = null;

try{

InputStream in = new java.net.URL(urlDisplay).openStream();

mIcon11 = BitmapFactory.decodeStream(in);

}catch (Exception e){

Log.e("hong", "error : " + e.getMessage());

e.printStackTrace();

}

return mIcon11;

}


@Override

protected void onPostExecute(Bitmap result) {

bmImage.setImageBitmap(result);

}

}

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Posted by 초코렛과자
|