質問編集履歴
2
手直し
test
CHANGED
File without changes
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test
CHANGED
@@ -8,7 +8,7 @@
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8
8
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9
9
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private Handler mHandler = new Handler();
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10
10
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11
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-
CanvasView cv;
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11
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+
CanvasView cv = new CanvasView(this);
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13
13
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14
14
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@@ -20,7 +20,7 @@
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20
20
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21
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setContentView(R.layout.activity_main);
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22
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23
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-
setContentView(
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23
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+
setContentView(cv);
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24
24
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25
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mHandler.postDelayed(this, 1000);
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26
26
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@@ -34,7 +34,7 @@
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34
34
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35
35
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cv.y += 5;
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36
36
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37
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-
setContentView(
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37
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+
setContentView(cv);
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38
38
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39
39
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mHandler.postDelayed(this, 1000);
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40
40
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1
付けたし
test
CHANGED
File without changes
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test
CHANGED
@@ -97,3 +97,65 @@
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97
97
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プログラムがおかしいからなのだとは思うのですが、
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98
98
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99
99
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何が原因なのでしょうか?
|
100
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+
|
101
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+
|
102
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+
|
103
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+
LogCatの内容
|
104
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+
|
105
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+
error opening trace file: No such file or directory (2)
|
106
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+
|
107
|
+
setTargetHeapUtilization:0.25
|
108
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+
|
109
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+
setTargetHeapIdealFree:8388608
|
110
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+
|
111
|
+
setTargetHeapConcurrentStart:2097152
|
112
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+
|
113
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+
Shutting down VM
|
114
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+
|
115
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+
threadid=1: thread exiting with uncaught exception (group=0x40b4a450)
|
116
|
+
|
117
|
+
FATAL EXCEPTION: main
|
118
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+
|
119
|
+
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.fireworks/com.example.fireworks.MainActivity}: java.lang.NullPointerException
|
120
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+
|
121
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+
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1994)
|
122
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+
|
123
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+
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2095)
|
124
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+
|
125
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+
at android.app.ActivityThread.access$600(ActivityThread.java:137)
|
126
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+
|
127
|
+
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1206)
|
128
|
+
|
129
|
+
at android.os.Handler.dispatchMessage(Handler.java:99)
|
130
|
+
|
131
|
+
at android.os.Looper.loop(Looper.java:213)
|
132
|
+
|
133
|
+
at android.app.ActivityThread.main(ActivityThread.java:4786)
|
134
|
+
|
135
|
+
at java.lang.reflect.Method.invokeNative(Native Method)
|
136
|
+
|
137
|
+
at java.lang.reflect.Method.invoke(Method.java:511)
|
138
|
+
|
139
|
+
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
|
140
|
+
|
141
|
+
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
|
142
|
+
|
143
|
+
at dalvik.system.NativeStart.main(Native Method)
|
144
|
+
|
145
|
+
Caused by: java.lang.NullPointerException
|
146
|
+
|
147
|
+
at android.content.ContextWrapper.getResources(ContextWrapper.java:81)
|
148
|
+
|
149
|
+
at android.view.View.<init>(View.java:3284)
|
150
|
+
|
151
|
+
at com.example.fireworks.CanvasView.<init>(CanvasView.java:17)
|
152
|
+
|
153
|
+
at com.example.fireworks.MainActivity.<init>(MainActivity.java:12)
|
154
|
+
|
155
|
+
at java.lang.Class.newInstanceImpl(Native Method)
|
156
|
+
|
157
|
+
at java.lang.Class.newInstance(Class.java:1319)
|
158
|
+
|
159
|
+
at android.app.Instrumentation.newActivity(Instrumentation.java:1053)
|
160
|
+
|
161
|
+
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1985)
|