Die App ändert nicht die TextGröße trotz if/else if Abfrage.

1package com.example.damianapp;
2
3import android.os.Bundle;
4import android.app.Activity;
5import android.view.View;
6import android.widget.Button;
7import android.widget.TextView;
8
9public class MainActivity extends Activity {
10
11 @Override
12 protected void onCreate(Bundle savedInstanceState) {
13 super.onCreate(savedInstanceState);
14 setContentView(R.layout.activity_main);
15 Button button = (Button)findViewById(R.id.button1);
16 final TextView tw = (TextView)findViewById(R.id.textView1);
17 final float sechzehn = 16;
18 final float siebzig = 70;
19 tw.setTextSize(16);
20 button.setOnClickListener(new View.OnClickListener() {
21 public void onClick(View v) {
22 if(tw.getTextSize()==sechzehn)
23 {
24 tw.setTextSize(70);
25 }
26 else if(tw.getTextSize()==siebzig)
27 {
28 tw.setTextSize(16);
29 }
30 }
31 });
32 }
33
34
35
36
37}

1<RelativeLayout xmlns:android="Forum will keinen Link..."
2 xmlns:tools="Forum will keinen Link..."
3 android:layout_width="match_parent"
4 android:layout_height="match_parent"
5 android:paddingBottom="@dimen/activity_vertical_margin"
6 android:paddingLeft="@dimen/activity_horizontal_margin"
7 android:paddingRight="@dimen/activity_horizontal_margin"
8 android:paddingTop="@dimen/activity_vertical_margin"
9 tools:context=".MainActivity" >
10
11 <TextView
12 android:id="@+id/textView1"
13 android:layout_width="wrap_content"
14 android:layout_height="wrap_content"
15 android:layout_alignParentTop="true"
16 android:layout_centerHorizontal="true"
17 android:layout_marginTop="70dp"
18 android:text="@string/hello_world"
19 android:textSize="16sp" />
20
21 <Button
22 android:id="@+id/button1"
23 android:layout_width="wrap_content"
24 android:layout_height="wrap_content"
25 android:layout_below="@+id/textView1"
26 android:layout_centerHorizontal="true"
27 android:layout_marginTop="124dp"
28 android:minHeight="80dp"
29 android:minWidth="300dp"
30 android:text="@string/groeße" />
31
32</RelativeLayout>