-
Notifications
You must be signed in to change notification settings - Fork 1
/
MainActivity.java
212 lines (200 loc) · 8.39 KB
/
MainActivity.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
public class MainActivity extends AppCompatActivity {
Button secenekA, secenekB, secenekC, secenekD, soruSil, yeniSoruEkle;
TextView soru, cevapA, cevapB, cevapC, cevapD;
JSONArray veritabani = new JSONArray();
JSONObject soruNesnesi;
int sorusirasi = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
secenekA = (Button) findViewById(R.id.button);
secenekB = (Button) findViewById(R.id.button2);
secenekC = (Button) findViewById(R.id.button3);
secenekD = (Button) findViewById(R.id.button4);
soruSil = (Button) findViewById(R.id.button5);
yeniSoruEkle = (Button) findViewById(R.id.button6);
soru = (TextView) findViewById(R.id.textView1);
cevapA = (TextView) findViewById(R.id.textView2);
cevapB = (TextView) findViewById(R.id.textView3);
cevapC = (TextView) findViewById(R.id.textView4);
cevapD = (TextView) findViewById(R.id.textView5);
IzinKontrolu();
soruGoster();
secenekA.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
cevapla("A");
}
});
secenekB.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
cevapla("B");
}
});
secenekC.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
cevapla("C");
}
});
secenekD.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
cevapla("D");
}
});
yeniSoruEkle.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this, SoruEkle.class);
i.putExtra("veritabani", veritabani.toString());
startActivity(i);
finish();
}
});
soruSil.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
sorusirasi--;
veritabani.remove(sorusirasi);
File dosya = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/sorular.json");
FileOutputStream fileOutputStream = new FileOutputStream(dosya);
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fileOutputStream);
outputStreamWriter.write(veritabani.toString());
outputStreamWriter.close();
fileOutputStream.close();
sorusirasi--;
soruGoster();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
public void soruGoster() {
if (veritabani.isNull(sorusirasi)) {
new AlertDialog.Builder(this)
.setTitle("HATA !!!")
.setMessage("Veri Tabanınızda Başka Soru Kalmamış.. Yeni Soru Eklemelisiniz.")
.setPositiveButton("Yeni Soru Ekle", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent i = new Intent(MainActivity.this, SoruEkle.class);
i.putExtra("veritabani", veritabani.toString());
startActivity(i);
finish();
}
})
.setNegativeButton("Iptal", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
})
.show();
} else {
try {
soruNesnesi = veritabani.getJSONObject(sorusirasi);
soru.setText(soruNesnesi.getString("Soru"));
cevapA.setText(soruNesnesi.getString("A"));
cevapB.setText(soruNesnesi.getString("B"));
cevapC.setText(soruNesnesi.getString("C"));
cevapD.setText(soruNesnesi.getString("D"));
sorusirasi++;
} catch (JSONException e) {
e.printStackTrace();
}
}
}
public void cevapla(String cevap) {
try {
if (soruNesnesi.getString("Cevap").equals(cevap)) {
Toast.makeText(this, "Tebrikler! Bildin..", Toast.LENGTH_SHORT).show();
soruGoster();
} else {
Toast.makeText(this, "Yanlış Cevabı Seçtiniz", Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
//---------- JSON Dosyasındaki verileri burada uygulamaya yüklüyoruz.
public void VeritabaniYukle() {
File dosya = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/sorular.json");
try {
if (!dosya.exists()) {
FileOutputStream fileOutputStream = new FileOutputStream(dosya);
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fileOutputStream);
outputStreamWriter.write(veritabani.toString());
outputStreamWriter.close();
fileOutputStream.close();
} else {
FileInputStream fileInputStream = new FileInputStream(dosya);
InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
//--- Dosyadaki verileri bir JSON Nesnesine aktarıyoruz.
veritabani = new JSONArray(bufferedReader.readLine());
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
}
//------- Burada Uygulamada Dosya yazma-okuma işlemleri için gerekli izni alıyoruz.
public void IzinKontrolu() {
String[] perms = {android.Manifest.permission.WRITE_EXTERNAL_STORAGE, android.Manifest.permission.READ_EXTERNAL_STORAGE};
int permsRequestCode = 67;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED
&& ContextCompat.checkSelfPermission(this, android.Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
VeritabaniYukle();
} else {
requestPermissions(perms, permsRequestCode);
IzinKontrolu();
}
} else {
VeritabaniYukle();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
@NonNull int[] grantResults) {
switch (requestCode) {
case 67:
boolean izin = grantResults[0] == PackageManager.PERMISSION_GRANTED;
break;
}
}
}