double-wert errechnen und in Intent übergeben

1package com.example.bmirechner;
2
3import java.text.DecimalFormat;
4import java.text.NumberFormat;
5
6import android.os.Bundle;
7import android.annotation.SuppressLint;
8import android.app.Activity;
9import android.content.Intent;
10import android.util.Log;
11import android.view.View;
12import android.view.View.OnClickListener;
13import android.widget.Button;
14import android.widget.EditText;
15import android.widget.TextView;
16
17public class SecondActivity extends Activity {
18
19
20 private EditText ageEdit, heightEdit, weightEdit;
21 private Button buttonBMI;
22 public TextView bmiValue, name_gruss;
23 public String bmi;
24 public static double bmi2, height, weight;
25 public String bmiString;
26
27
28
29 private static final String TAG = MainActivity.class.getSimpleName();
30
31 @Override
32 public void onCreate(Bundle savedInstanceState) {
33 super.onCreate(savedInstanceState);
34 setContentView(R.layout.second_main);
35 Intent in = getIntent();
36
37 name_gruss = (TextView) findViewById(R.id.name_gruss);
38 name_gruss.setText(getString(R.string.begruessung, in.getStringExtra("Name")));
39
40
41 // wenn kein Zwischenspeicher vorliegt > folgende Ausgabe im View LogCat
42 // if-Abfrage um NullpointerException zu vermeiden
43 if (savedInstanceState == null) {
44 Log.d(TAG, "savedInstanceState war null");
45 //sobald einer Zwischenspeicher vorliegt, auch wenn Bildschirm nur gedreht wurde
46 } else {
47 Log.d(TAG,
48 "wurde vor "
49 + (System.currentTimeMillis() - savedInstanceState
50 .getLong(TAG)) + " Millisekunden beendet");
51 }
52
53 buttonBMI = (Button) findViewById(R.id.buttonBMI);
54 buttonBMI.setText(R.string.buttonBMI);
55
56 ageEdit = (EditText) findViewById(R.id.ageEdit);
57 heightEdit = (EditText) findViewById(R.id.heightEdit);
58 weightEdit = (EditText) findViewById(R.id.weightEdit);
59
60
61 buttonBMI.setOnClickListener(new OnClickListener() {
62
63
64
65
66
67
68 @SuppressLint({ "NewApi", "UseValueOf" })
69 public void onClick(View v) {
70
71 if ((ageEdit.getText().length() == 0) || (weightEdit.getText().length() == 0) || (heightEdit.getText().length() == 0) )
72 {
73 System.out.println("popup");
74 } else {
75
76 double age = Double.valueOf(ageEdit.getText().toString());
77 double height = Double.valueOf(heightEdit.getText().toString());
78 double weight = Double.valueOf(weightEdit.getText().toString());
79
80 System.out.println(age);
81 System.out.println(height);
82 System.out.println(weight);
83
84 double bmi1 = height * height;
85
86 System.out.println(bmi1);
87 double bmi2 = weight/bmi1 * 10000;
88
89 bmiString = (new Double(bmi2).toString());
90
91 }
92
93 Intent thirdA = new Intent(getApplicationContext(), ThirdActivity.class);
94
95 thirdA.putExtra("DoubleValue", bmi2);
96 startActivity(thirdA);
97 }
98 });
99
100 }
101
102 @Override
103 // überschreiben der Methode onSaveInstanceState um beim Beenden der
104 // Activity Daten in einem Bundle abzulegen
105 protected void onSaveInstanceState(Bundle outState) {
106 // Aufruf der Elternmehtode um Inhalte z.B. in Textfeldern beim erneuten
107 // Wiederaufruf zu sichern
108 super.onSaveInstanceState(outState);
109 // mit put-Methode auf Bundle-Referenz "outState" werden beim Beenden
110 // einer Activity Daten in einem Bundle abgelegt
111 outState.putLong(TAG, System.currentTimeMillis());
112 }
113}

1package com.example.bmirechner;
2
3import android.os.Parcel;
4import android.os.Parcelable;
5
6public class DoubleValue implements Parcelable {
7
8 public double bmiValue =SecondActivity.bmi2;
9
10 // Constructor
11 public DoubleValue(double bmiValue){
12 this.bmiValue = bmiValue;
13 }
14
15 //Parcelling part
16 public DoubleValue(Parcel in) {
17 bmiValue = in.readDouble();
18 }
19
20 public double getBmiValue() {
21 return this.bmiValue;
22 }
23
24 public void setBmiValue(double bmiValue) {
25 this.bmiValue = bmiValue;
26 }
27
28 @Override
29 public int describeContents() {
30 return 0;
31 }
32
33 @Override
34 public void writeToParcel(Parcel dest, int flags) {
35 dest.writeDouble(this.bmiValue);
36
37
38// dest.writeStringArray(new String[] { this.id, this.name, this.grade });
39 }
40
41 @SuppressWarnings("rawtypes")
42 public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
43 public DoubleValue createFromParcel(Parcel in) {
44 return new DoubleValue(in);
45 }
46
47 public DoubleValue[] newArray(int size) {
48 return new DoubleValue[size];
49 }
50 };
51}

1import android.app.Activity;
2import android.content.Intent;
3import android.os.Bundle;
4import android.util.Log;
5import android.widget.TextView;
6
7public class ThirdActivity extends Activity {
8
9 private static final String TAG = ThirdActivity.class.getSimpleName();
10 private TextView bmiValue;
11 DoubleValue doubleValue;
12
13 @Override
14 public void onCreate(Bundle savedInstanceState) {
15 super.onCreate(savedInstanceState);
16 setContentView(R.layout.third_main);
17 Bundle data = getIntent().getExtras();
18 doubleValue = data.getParcelable("DoubleValue");
19 Intent thirdAct = getIntent();
20
21 bmiValue = (TextView) findViewById(R.id.bmiValue);
22 bmiValue.setText(getString(R.string.bmiValue,thirdAct.getStringExtra("DoubleValue")));
23
24
25
26 // wenn kein Zwischenspeicher vorliegt > folgende Ausgabe im View LogCat
27 // if-Abfrage um NullpointerException zu vermeiden
28 if (savedInstanceState == null) {
29 Log.d(TAG, "savedInstanceState war null");
30 // sobald einer Zwischenspeicher vorliegt, auch wenn Bildschirm nur
31 // gedreht wurde
32 } else {
33 Log.d(TAG,
34 "wurde vor "
35 + (System.currentTimeMillis() - savedInstanceState
36 .getLong(TAG)) + " Millisekunden beendet");
37
38 }
39 }
40}

1package com.example.bmirechner;
2
3import android.os.Parcel;
4import android.os.Parcelable;
5
6public class DoubleValue implements Parcelable {
7
8 public Double bmiValue = SecondActivity.bmi2;
9
10 // Constructor
11 public DoubleValue(Double bmiValue){
12 this.bmiValue = bmiValue;
13 }
14
15 //Parcelling part
16 public DoubleValue(Parcel in) {
17 bmiValue = in.readDouble();
18 }
19
20 public double getBmiValue() {
21 return this.bmiValue;
22 }
23
24 public void setBmiValue(double bmiValue) {
25 this.bmiValue = bmiValue;
26 }
27
28 @Override
29 public int describeContents() {
30 return 0;
31 }
32
33 @Override
34 public void writeToParcel(Parcel dest, int flags) {
35 dest.writeDouble(this.bmiValue);
36
37
38// dest.writeStringArray(new String[] { this.id, this.name, this.grade });
39 }
40
41 @SuppressWarnings("rawtypes")
42 public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
43 public DoubleValue createFromParcel(Parcel in) {
44 return new DoubleValue(in);
45 }
46
47 public DoubleValue[] newArray(int size) {
48 return new DoubleValue[size];
49 }
50 };
51}

1public Double Value dblValue;

1Intent thirdA = new Intent(getApplicationContext(), ThirdActivity.class);
2 thirdA.putExtra("DoubleValue", dblValue);
3 startActivity(thirdA);

1buttonBMI.setOnClickListener(new OnClickListener() {
2
3 @SuppressLint({ "NewApi", "UseValueOf" })
4 public void onClick(View v) {
5
6 if ((ageEdit.getText().length() == 0) || (weightEdit.getText().length() == 0) || (heightEdit.getText().length() == 0))
7 {
8 System.out.println("popup");
9 } else {
10
11 double age = Double.valueOf(ageEdit.getText().toString());
12 double height = Double.valueOf(heightEdit.getText().toString());
13 double weight = Double.valueOf(weightEdit.getText().toString());
14
15 System.out.println(age);
16 System.out.println(height);
17 System.out.println(weight);
18
19
20 DecimalFormat f = new DecimalFormat("#0.00");
21
22 double bmi1 = height * height;
23 System.out.println(bmi1);
24
25 double bmi2 = weight/bmi1 * 10000;
26 System.out.println(bmi2);
27 System.out.println(f.format(bmi2));
28 String d2 = f.format(bmi2);
29
30
31 bmiString = (new Double(bmi2).toString());
32 System.out.println(bmiString);
33
34 Intent thirdA = new Intent(getApplicationContext(), ThirdActivity.class);
35 thirdA.putExtra("DoubleValue", b2);
36 startActivity(thirdA);
37 }
38 }
39 });
40 }

1thirdA.putExtra("DoubleValue", bmi2);

1DecimalFormat f = new DecimalFormat("#0.00");
2 double bmi1 = height * height;
3 double bmi2 = weight/bmi1 * 10000;
4 String dblbmi = f.format(bmi2);
5
6 Intent thirdA = new Intent(getApplicationContext(), ThirdActivity.class);
7 thirdA.putExtra("DoubleValue", dblbmi);
8 startActivity(thirdA);

1Intent thirdAct = getIntent();
2
3 bmiValue = (TextView) findViewById(R.id.bmiValue);
4 bmiValue.setText(getString(R.string.bmiValue,thirdAct.getStringExtra("DoubleValue")));

1String dblbmi = f.format(bmi2);

1Intent thirdA = new Intent(SecondActivity.this, ThirdActivity.class);
2 thirdA.putExtra("DoubleValue", dblbmi);
3 startActivity(thirdA);

1Intent thirdAct = getIntent();
2
3 bmiValue = (TextView) findViewById(R.id.bmiValue);
4 bmiValue.setText(getString(R.string.bmiValue,thirdAct.getStringExtra("DoubleValue")));