웹에 있는 이미지를 읽어서 ImageView에 출력

[code java]
package yell.exam01;

import java.io.FileOutputStream;
import java.io.InputStream;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.entity.BufferedHttpEntity;
import org.apache.http.impl.client.DefaultHttpClient;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import yell.exam01.R;

public class test_network extends Activity {

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test_network);
}

public void mOnClick(View v) {

EditText et = (EditText) findViewById(R.id.textURL);
ImageView iv = (ImageView) findViewById(R.id.imageview1);

if (et.getText().toString() != null) {
try {
HttpGet httpget = new HttpGet(et.getText().toString());
DefaultHttpClient client = new DefaultHttpClient();
HttpResponse response = client.execute(httpget);
InputStream is = new BufferedHttpEntity(response.getEntity()).getContent();

Bitmap bit = BitmapFactory.decodeStream(is);
iv.setImageBitmap(bit);

String path = Environment.getDataDirectory().getAbsolutePath();
path += “/data/yell.exam01/files/test.png”;

Log.d(“YELL”, path);
FileOutputStream fos = new FileOutputStream(path);
bit.compress(Bitmap.CompressFormat.PNG, 100, fos);
}
catch (Exception e) {
// TODO: handle exception
Log.d(“YELL”, e.getMessage());
}
}
}
}
[/code]

쓰레드를 사용해서 웹페이지 소스 가져오기

[code java]
package yell.exam01;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import yell.exam01.R;

public class test_network extends Activity {

downloadThread mThread;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test_network);
}

public void mOnClick(View v) {

EditText et = (EditText) findViewById(R.id.textURL);
ImageView iv = (ImageView) findViewById(R.id.imageview1);

if (et.getText().toString() != null) {
mThread = new downloadThread(et.getText().toString());
mThread.start();
}
}

class downloadThread extends Thread {
String mAddr;

public downloadThread(String addr) {
// TODO Auto-generated constructor stub
mAddr = addr;
}

@Override
public void run() {
// TODO Auto-generated method stub
HttpGet httpget = new HttpGet(mAddr);
DefaultHttpClient client = new DefaultHttpClient();
try {
client.execute(httpget, mResHandler);
}
catch (Exception e) {
// TODO: handle exception
}
}

ResponseHandler mResHandler = new ResponseHandler() {
public String handleResponse(HttpResponse response) throws ClientProtocolException, IOException {
// TODO Auto-generated method stub

Log.d(“YELL”, “읽기 스트림 시작”);

StringBuilder html = new StringBuilder();
try {
BufferedReader br = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
String line = null;
while ((line = br.readLine()) != null) {
html.append(line + “\n”);
}
br.close();

Log.d(“YELL”, “끗~ 메시지 보냄”);
Log.d(“YELL”, html.substring(0, 1000).toString());

Message message = mAfterDown.obtainMessage();
Bundle bundle = new Bundle();
bundle.putString(“result”, html.toString());
message.setData(bundle);
mAfterDown.sendMessage(message);
}
catch (Exception e) {
// TODO: handle exception
}

return html.toString();
}
};

Handler mAfterDown = new Handler() {
public void handleMessage(android.os.Message msg) {
String sResult = msg.getData().getString(“result”);
TextView tv = (TextView) findViewById(R.id.textview_result);
tv.setText(sResult);
};
};
}
}
[/code]

탭(TabHost, TabWidget)

[code java]




[/code]
[code java]
public class TabTest extends TabActivity {

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tab_test);

TabHost mTab = getTabHost();
Intent intent;

intent = new Intent().setClass(this, Tab01.class);
mTab.addTab(mTab.newTabSpec(“tag1”).setIndicator(“TAB1”).setContent(intent));

intent = new Intent().setClass(this, Tab02.class);
mTab.addTab(mTab.newTabSpec(“tag2”).setIndicator(“TAB2”).setContent(intent));

intent = new Intent().setClass(this, Tab03.class);
mTab.addTab(mTab.newTabSpec(“tag3”).setIndicator(“TAB3”).setContent(intent));

mTab.setCurrentTab(0);
}
}
[/code]

암시적 인텐트

[code java]
public void mOnClick(View v) {
Intent intent;
switch (v.getId()) {
case R.id.btnWeb:
intent = new Intent(Intent.ACTION_VIEW, Uri.parse(“http://www.yell.co.kr”));
startActivity(intent);
break;

case R.id.btnCall:
intent = new Intent(Intent.ACTION_DIAL, Uri.parse(“tel:010-1234-5678”));
startActivity(intent);
break;

case R.id.btnPhoto:
intent = new Intent(Intent.ACTION_VIEW);
String sd = Environment.getExternalStorageDirectory().getAbsolutePath();
Uri uri = Uri.fromFile(new File(sd + “/devil.jpg”));
intent.setDataAndType(uri, “image/jpeg”);
startActivity(intent);
break;

default:
break;
}
}
[/code]

액티비티간의 통신

[Codejava]
package yell.exam01;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

public class Exam01Activity extends Activity {

TextView mText;
final static int ACT_EDIT = 0;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview);

mText = (TextView) findViewById(R.id.textView1);
}

public void modifyText(View v) {
switch (v.getId()) {
case R.id.btnModify:
Intent intent = new Intent(this, Exam01_modifyText.class);
intent.putExtra(“TextIn”, mText.getText().toString());
startActivityForResult(intent, ACT_EDIT);
break;

default:
break;
}
}

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case ACT_EDIT:
if (resultCode == RESULT_OK) {
mText.setText(data.getStringExtra(“TextOut”));
}
break;

default:
break;
}
}

public void showSubActivity(View v) {
Intent intent = new Intent(this, Exam01SubActivity.class);
startActivity(intent);
}
}
[/code]

[code java]
package yell.exam01;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

public class Exam01_modifyText extends Activity {

EditText mEdit;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.modifytext);

mEdit = (EditText) findViewById(R.id.editText1);

Intent intent = getIntent();
String text = intent.getStringExtra(“TextIn”);
if (text != null) {
mEdit.setText(text);
}
}

public void mOnClick(View v) {
switch (v.getId()) {
case R.id.btnOk:
Intent intent = new Intent();
intent.putExtra(“TextOut”, mEdit.getText().toString());
setResult(RESULT_OK, intent);
finish();
break;

default:
setResult(RESULT_CANCELED);
finish();
break;
}
}
}
[/code]

이벤트 처리 > 익명 이너 클래스를 바로 사용

[code java]
package yell.exam01;

import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.Toast;

public class Exam01Activity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

LinearLayout linear = new LinearLayout(this);
linear.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if ( event.getAction() == MotionEvent.ACTION_DOWN ) {
Toast.makeText(Exam01Activity.this, “Touched!!!”, Toast.LENGTH_SHORT).show();
return true;
}
return false;
}
});
setContentView(linear);
}
}
[/code]

LinearLayout 객체를 생성한 뒤, 터치 리스너를 등록했다.

리스너에는 MotionEvent.ACTION_DOWN 즉, 화면 터치시 “Touched!!!”를 출력하도록 했다.

여러가지 이벤트 처리방법이 있는데 가장 간편한 방법이다.

Android SDK Tools Setup :: JDK not found

Java SE Development Kit (JDK) not found.

Android SDK relies on the Java SE Development Kit (JDK).
Go to http://java.sun.com > Downloads > Java SE > JDK to download adn install a JDK before continuing.

Note: A Java Runtime (JRE) is not enough to develop for Android.

Visit java.sun.com

==================================================================

안드로이드 SDK 설치시,
JDK가 설치되어 있음에도 Next 가 안되는 상황발생

해결방법(1)
http://codearetoy.wordpress.com/2010/12/23/jdk-not-found-on-installing-android-sdk/
위 링크로 이동해서 따라하면 된다
32bit로 설치하든지 zip 파일로 설치해 보길 권하고 있다.

해결방법(2)
Next > 버튼이 비활성화 되어 있다면 < Back 한번 눌렀다가 다시 와보면 Next >가 활성화 되어 있다.
설치를 진행하면 된다…. -_-;;;;;;;;;

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