Problem mit NumbPicker und Decimalzahl

1androidhub4you.com/2013/03/custom-picker-in-android-number-picker.html

1String getString = String.format("%.1f", textViewMid.getText());

1String getString = String.valueOf(textViewMid.getText());

1package ch.test.numbpicker;
2
3import ch.test.numbpicker.R;
4import ch.test.numbpicker.NumbpickerActivity;
5
6import android.os.Bundle;
7import android.view.View;
8import android.view.View.OnClickListener;
9import android.widget.Button;
10import android.widget.TextView;
11import android.app.Activity;
12
13public class NumbpickerActivity extends Activity implements OnClickListener {
14 Button btnUp, btnDown;
15 TextView textViewUp, textViewMid, textViewBottom;
16
17 double nStart = 0.0;
18 double nEnd = 10.0;
19
20 @Override
21 public void onCreate(Bundle savedInstanceState)
22 {
23 super.onCreate(savedInstanceState);
24 setContentView(R.layout.activity_numbpicker);
25 btnUp = (Button) findViewById(R.id.button1);
26 btnDown = (Button) findViewById(R.id.button2);
27
28 textViewUp = (TextView) findViewById(R.id.textView1);
29 textViewMid = (TextView) findViewById(R.id.textView2);
30 textViewBottom = (TextView) findViewById(R.id.textView3);
31
32 textViewUp.setText("0.1");
33 textViewMid.setText("0.0");
34 textViewBottom.setText("");
35
36 btnUp.setOnClickListener(this);
37 btnDown.setOnClickListener(this);
38 }
39
40 @Override
41 public void onClick(View v)
42 {
43// So funktionierts, allerdings nur Ganzzahl
44 String getString = String.valueOf(textViewMid.getText());
45 Double curent = Double.parseDouble(getString);
46
47 // So funktionierts leider nicht, App stürzt ab!
48 // String getString = String.format("%.1f", textViewMid.getText());
49 // Double curent = Double.parseDouble(getString);
50
51 if (v == btnUp)
52 {
53 if (curent < nEnd)
54 {
55 curent++;
56 String OutputStringUP = String.format("%.1f", (curent) + 0.1);
57 textViewUp.setText(OutputStringUP);
58 String OutputStringCURRENT = String.format("%.1f", (curent));
59 textViewMid.setText(OutputStringCURRENT);
60 String OutputStringDOWN = String.format("%.1f", (curent) - 0.1);
61 textViewBottom.setText(OutputStringDOWN);
62 }
63 }
64
65 if (v == btnDown)
66 {
67 if (curent > nStart)
68 {
69 curent--;
70 String OutputStringUP = String.format("%.1f", (curent) + 0.1);
71 textViewUp.setText(OutputStringUP);
72 String OutputStringCURRENT = String.format("%.1f", (curent));
73 textViewMid.setText(OutputStringCURRENT);
74 String OutputStringDOWN = String.format("%.1f", (curent) - 0.1);
75 textViewBottom.setText(OutputStringDOWN);
76 }
77 }
78 }
79}

1String.format(?, current);