Beiträge von Thor

package me.com.example.sparrechner;


import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;


import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;


public class SparRechner extends Activity {
	
	private static final String TAG = SparRechner.class.getSimpleName();
	private static final String FILENAME = TAG + ".txt";
	
	private EditText beitrag;
	private TextView anzeige;
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
    	super.onCreate(savedInstanceState);
    	
    	setContentView(R.layout.activity_spar_rechner);
    	beitrag = (EditText) findViewById(R.id.derBetrag);
    	beitrag.setText("0");
    	
    	anzeige = (TextView) findViewById(R.id.textView4);
    	anzeige.setText("0");
    	
    	File f = getFilesDir();
 		Log.d(TAG, "getFilesDir(): " + f.getAbsolutePath());
 		
    	Button aktualisieren = (Button) findViewById(R.id.button2);
    	aktualisieren.setOnClickListener(new OnClickListener() {
 			public void onClick(View v) {
 				int kosten = Integer.parseInt(load());
 				int einrtag = Integer.parseInt(beitrag.getText().toString());
 				kosten = kosten+ einrtag;
 				anzeige.setText (kosten);
 				beitrag.setText("");
 			}
 		});
    	
    	Button hinzufuegen = (Button) findViewById(R.id.button1);
    	hinzufuegen.setOnClickListener(new OnClickListener() {
 			public void onClick(View v) {
 				int aktuell = Integer.parseInt(anzeige.getText().toString());
 				int neu = aktuell + Integer.parseInt(beitrag.getText().toString());
 				anzeige.setText(neu);
 				save(anzeige.getText().toString());
 			}
 		});
 		
    	}


	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
    	getMenuInflater().inflate(R.menu.activity_spar_rechner, menu);
    	return true;
	}
	
	private String load() {
		StringBuilder sb = new StringBuilder();
		FileInputStream fis = null;
		InputStreamReader isr = null;
		BufferedReader br = null;
		try {
			fis = openFileInput(FILENAME);
			isr = new InputStreamReader(fis);
			br = new BufferedReader(isr);
			String s;
			while ((s = br.readLine()) != null) {
				if (sb.length() > 0) {
					sb.append('\n');
				}
			sb.append(s);
			}
		} catch (Throwable t) {
			Log.e(TAG, "load()", t);
		} finally {
			if (br != null) {
				try {
					br.close();
				}
				catch (IOException e) {
					Log.e(TAG, "br.close()", e);
				}
			}
				
		}
		if (isr != null) {
			try {
				isr.close();
			} catch (IOException e) {
				Log.e(TAG, "isr.close()", e);
			}
		}
		if (fis != null) {
			try {
				fis.close();
			} catch (IOException e) {
				Log.e(TAG, "fis.close()", e);
			}
		}
		if (sb.toString() == "") {
			sb.insert(0, 1);
		}
		return sb.toString();
	}
	
	
	private void save(String text) {
		FileOutputStream fos = null;
		OutputStreamWriter osw = null;
		try{
			fos = openFileOutput(FILENAME, MODE_PRIVATE);
			osw = new OutputStreamWriter(fos);
			osw.write(text);
		} catch (Throwable t) {
			Log.e(TAG, "save()", t);
		} finally{
			if (osw != null) {
				try {
					osw.close();
				} catch (IOException e) {
					Log.e(TAG, "osw.close()", e);
					
				}
			}
			if (fos != null) {
				try {
					fos.close();
				} catch (IOException e){
					Log.e(TAG, "fos.close()", e);
				}
			}
		}
	} 
}

package me.com.example.sparrechner;


import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;


import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;


public class SparRechner extends Activity {
	
	private static final String TAG = SparRechner.class.getSimpleName();
	private static final String FILENAME = TAG + ".txt";
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
    	super.onCreate(savedInstanceState);
    	setContentView(R.layout.activity_spar_rechner);
    	EditText Betrag = (EditText) findViewById(R.id.derBetrag);
    	Betrag.setText("0");
    	TextView Anzeige = (TextView) findViewById(R.id.textView4);
    	Anzeige.setText("0");
    	
    	File f = getFilesDir();
 		Log.d(TAG, "getFilesDir(): " + f.getAbsolutePath());
 		
    	Button aktualisieren = (Button) findViewById(R.id.button2);
    	aktualisieren.setOnClickListener(new OnClickListener() {
 			public void onClick(View v) {
 				EditText Betrag = (EditText) findViewById(R.id.derBetrag);
 				TextView Anzeige = (TextView) findViewById(R.id.textView4);
 				int kosten = Integer.parseInt(load());
 				int einrtag = Integer.parseInt(Betrag.getText().toString());
 				kosten = kosten+ einrtag;
 				Anzeige.setText(kosten);
 				Betrag.setText("");
 			}
 		});
    	
    	Button hinzufuegen = (Button) findViewById(R.id.button1);
    	hinzufuegen.setOnClickListener(new OnClickListener() {
 			public void onClick(View v) {
 				EditText Betrag = (EditText) findViewById(R.id.derBetrag);
 				TextView Anzeige = (TextView) findViewById(R.id.textView4);
 				int aktuell = Integer.parseInt(Anzeige.getText().toString());
 				int neu = aktuell + Integer.parseInt(Betrag.getText().toString());
 				Anzeige.setText(neu);
 				save(Anzeige.getText().toString());
 			}
 		});
 		
    	}


	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
    	getMenuInflater().inflate(R.menu.activity_spar_rechner, menu);
    	return true;
	}
	
	private String load() {
		StringBuilder sb = new StringBuilder();
		FileInputStream fis = null;
		InputStreamReader isr = null;
		BufferedReader br = null;
		try {
			fis = openFileInput(FILENAME);
			isr = new InputStreamReader(fis);
			br = new BufferedReader(isr);
			String s;
			while ((s = br.readLine()) != null) {
				if (sb.length() > 0) {
					sb.append('\n');
				}
			sb.append(s);
			}
		} catch (Throwable t) {
			Log.e(TAG, "load()", t);
		} finally {
			if (br != null) {
				try {
					br.close();
				}
				catch (IOException e) {
					Log.e(TAG, "br.close()", e);
				}
			}
				
		}
		if (isr != null) {
			try {
				isr.close();
			} catch (IOException e) {
				Log.e(TAG, "isr.close()", e);
			}
		}
		if (fis != null) {
			try {
				fis.close();
			} catch (IOException e) {
				Log.e(TAG, "fis.close()", e);
			}
		}
		return sb.toString();
	}
	
	
	private void save(String text) {
		FileOutputStream fos = null;
		OutputStreamWriter osw = null;
		try{
			fos = openFileOutput(FILENAME, MODE_PRIVATE);
			osw = new OutputStreamWriter(fos);
			osw.write(text);
		} catch (Throwable t) {
			Log.e(TAG, "save()", t);
		} finally{
			if (osw != null) {
				try {
					osw.close();
				} catch (IOException e) {
					Log.e(TAG, "osw.close()", e);
					
				}
			}
			if (fos != null) {
				try {
					fos.close();
				} catch (IOException e){
					Log.e(TAG, "fos.close()", e);
				}
			}
		}
	} 
}

<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="match_parent" >


	<Button
    	android:id="@+id/button1"
    	android:layout_width="wrap_content"
    	android:layout_height="wrap_content"
    	android:layout_alignParentBottom="true"
    	android:layout_alignParentRight="true"
    	android:layout_marginBottom="146dp"
    	android:layout_marginRight="22dp"
    	android:text="@string/Hinzufuegen" />


	<TextView
    	android:id="@+id/textView4"
    	android:layout_width="wrap_content"
    	android:layout_height="wrap_content"
    	android:layout_alignRight="@+id/button1"
    	android:layout_centerVertical="true"
    	android:text="@string/Alles"
    	android:textAppearance="?android:attr/textAppearanceLarge" />


	<EditText
    	android:id="@+id/derBetrag"
    	android:layout_width="wrap_content"
    	android:layout_height="wrap_content"
    	android:layout_above="@+id/textView4"
    	android:layout_alignParentRight="true"
    	android:layout_marginBottom="34dp"
    	android:ems="10"
    	android:inputType="numberDecimal" />


	<TextView
    	android:id="@+id/textView1"
    	android:layout_width="wrap_content"
    	android:layout_height="wrap_content"
    	android:layout_alignParentTop="true"
    	android:layout_centerHorizontal="true"
    	android:layout_marginTop="14dp"
    	android:text="@string/Heading"
    	android:textAppearance="?android:attr/textAppearanceLarge" />


	<Button
    	android:id="@+id/button2"
    	android:layout_width="wrap_content"
    	android:layout_height="wrap_content"
    	android:layout_alignBaseline="@+id/button1"
    	android:layout_alignBottom="@+id/button1"
    	android:layout_toLeftOf="@+id/button1"
    	android:text="@string/Aktualisieren" />


	<TextView
    	android:id="@+id/textView2"
    	android:layout_width="wrap_content"
    	android:layout_height="wrap_content"
    	android:layout_alignBaseline="@+id/derBetrag"
    	android:layout_alignBottom="@+id/derBetrag"
    	android:layout_alignParentLeft="true"
    	android:layout_marginLeft="18dp"
    	android:text="@string/Betrag"
    	android:textAppearance="?android:attr/textAppearanceMedium" />


	<TextView
    	android:id="@+id/textView3"
    	android:layout_width="wrap_content"
    	android:layout_height="wrap_content"
    	android:layout_alignBaseline="@+id/textView4"
    	android:layout_alignBottom="@+id/textView4"
    	android:layout_alignLeft="@+id/textView2"
    	android:text="@string/Gesammt"
    	android:textAppearance="?android:attr/textAppearanceLarge" />


</RelativeLayout>