ラジオボタンを選択するとアプリがクラッシュする理由は何ですか?
私は輸入しましたandroid.widget.RadioGroup.OnCheckedChangeListener
、そして私も試しました
new RadioGroup.OnCheckedChangeListener()
これは、同様の投稿に対する解決策でした。
コードは次のとおりです(logcatが追加されています):
RadioGroup ringtone_radio_group = (RadioGroup)findViewById(R.id.ringtone_radio_group);
ringtone_radio_group.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
@Override
public void onCheckedChanged(RadioGroup group, int checkedId)
{
Toast.makeText(getApplicationContext(), "checked id = " + checkedId, Toast.LENGTH_SHORT).show();
}
});
レイアウトは次のとおりです。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:layout_gravity="left">
<TextView android:id="@+id/ringtone_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textSize="30sp"
android:text="Hello!"/>
<RadioGroup
android:id="@+id/ringtone_radio_group"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton android:id="@+id/ringtone_button_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/ringtone1"
android:onClick="onRadioButtonClicked"/>
<Button
android:id="@+id/play_button_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_toRightOf="@id/ringtone_button_1"
android:text="Play" />
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton android:id="@+id/ringtone_button_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/ringtone2"
android:onClick="onRadioButtonClicked"/>
<Button android:id="@+id/play_button_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Play" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton android:id="@+id/ringtone_button_3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/ringtone3"
android:onClick="onRadioButtonClicked"/>
<Button android:id="@+id/play_button_3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Play" />
</LinearLayout>
</RadioGroup>
</LinearLayout>
ログキャット:
05-31 11:09:36.053: E/AndroidRuntime(26969): java.lang.IllegalStateException: Could not find a method onRadioButtonClicked(View) in the activity class com.example.ringtones.MainActivity for onClick handler on view class android.widget.RadioButton with id 'ringtone_button_1'
05-31 11:09:36.053: E/AndroidRuntime(26969): at android.view.View$1.onClick(View.java:3031)
05-31 11:09:36.053: E/AndroidRuntime(26969): at android.view.View.performClick(View.java:3511)
05-31 11:09:36.053: E/AndroidRuntime(26969): at android.widget.CompoundButton.performClick(CompoundButton.java:100)
05-31 11:09:36.053: E/AndroidRuntime(26969): at android.view.View$PerformClick.run(View.java:14105)
05-31 11:09:36.053: E/AndroidRuntime(26969): at android.os.Handler.handleCallback(Handler.java:605)
05-31 11:09:36.053: E/AndroidRuntime(26969): at android.os.Handler.dispatchMessage(Handler.java:92)
05-31 11:09:36.053: E/AndroidRuntime(26969): at android.os.Looper.loop(Looper.java:137)
05-31 11:09:36.053: E/AndroidRuntime(26969): at android.app.ActivityThread.main(ActivityThread.java:4424)
05-31 11:09:36.053: E/AndroidRuntime(26969): at java.lang.reflect.Method.invokeNative(Native Method)
05-31 11:09:36.053: E/AndroidRuntime(26969): at java.lang.reflect.Method.invoke(Method.java:511)
05-31 11:09:36.053: E/AndroidRuntime(26969): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:812)
05-31 11:09:36.053: E/AndroidRuntime(26969): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:579)
05-31 11:09:36.053: E/AndroidRuntime(26969): at dalvik.system.NativeStart.main(Native Method)
05-31 11:09:36.053: E/AndroidRuntime(26969): Caused by: java.lang.NoSuchMethodException: onRadioButtonClicked [class android.view.View]
05-31 11:09:36.053: E/AndroidRuntime(26969): at java.lang.Class.getConstructorOrMethod(Class.java:460)
05-31 11:09:36.053: E/AndroidRuntime(26969): at java.lang.Class.getMethod(Class.java:915)
05-31 11:09:36.053: E/AndroidRuntime(26969): at android.view.View$1.onClick(View.java:3024)
05-31 11:09:36.053: E/AndroidRuntime(26969): ... 12 more
05-31 11:27:02.010: I/Adreno200-EGLSUB(27793): <ConfigWindowMatch:2081>: Format RGBA_8888.
05-31 11:27:02.020: D/memalloc(27793): /dev/pmem: Mapped buffer base:0x509ca000 size:6103040 offset:5488640 fd:55
05-31 11:27:02.160: D/memalloc(27793): /dev/pmem: Mapped buffer base:0x511ba000 size:614400 offset:0 fd:58
05-31 11:27:05.053: I/Adreno200-EGLSUB(27793): <ConfigWindowMatch:2081>: Format RGBA_8888.
05-31 11:27:05.053: D/memalloc(27793): /dev/pmem: Mapped buffer base:0x51467000 size:3645440 offset:3031040 fd:61
05-31 11:27:05.143: D/memalloc(27793): /dev/pmem: Mapped buffer base:0x51855000 size:4874240 offset:4259840 fd:70
05-31 11:27:05.163: D/memalloc(27793): /dev/pmem: Mapped buffer base:0x51cfb000 size:6758400 offset:6717440 fd:73
05-31 11:27:05.183: D/memalloc(27793): /dev/pmem: Unmapping buffer base:0x509ca000 size:6103040 offset:5488640
05-31 11:27:05.183: D/memalloc(27793): /dev/pmem: Unmapping buffer base:0x511ba000 size:614400 offset:0
05-31 11:27:06.944: D/memalloc(27793): /dev/pmem: Unmapping buffer base:0x51cfb000 size:6758400 offset:6717440
05-31 11:27:07.705: D/memalloc(27793): /dev/pmem: Mapped buffer base:0x508ca000 size:614400 offset:0 fd:52
05-31 11:27:08.005: W/dalvikvm(27793): threadid=1: thread exiting with uncaught exception (group=0x40a641f8)
05-31 11:27:08.005: E/AndroidRuntime(27793): FATAL EXCEPTION: main
05-31 11:27:08.005: E/AndroidRuntime(27793): java.lang.IllegalStateException: Could not find a method onRadioButtonClicked(View) in the activity class com.example.ringtones.MainActivity for onClick handler on view class android.widget.RadioButton with id 'ringtone_button_1'
05-31 11:27:08.005: E/AndroidRuntime(27793): at android.view.View$1.onClick(View.java:3031)
05-31 11:27:08.005: E/AndroidRuntime(27793): at android.view.View.performClick(View.java:3511)
05-31 11:27:08.005: E/AndroidRuntime(27793): at android.widget.CompoundButton.performClick(CompoundButton.java:100)
05-31 11:27:08.005: E/AndroidRuntime(27793): at android.view.View$PerformClick.run(View.java:14105)
05-31 11:27:08.005: E/AndroidRuntime(27793): at android.os.Handler.handleCallback(Handler.java:605)
05-31 11:27:08.005: E/AndroidRuntime(27793): at android.os.Handler.dispatchMessage(Handler.java:92)
05-31 11:27:08.005: E/AndroidRuntime(27793): at android.os.Looper.loop(Looper.java:137)
05-31 11:27:08.005: E/AndroidRuntime(27793): at android.app.ActivityThread.main(ActivityThread.java:4424)
05-31 11:27:08.005: E/AndroidRuntime(27793): at java.lang.reflect.Method.invokeNative(Native Method)
05-31 11:27:08.005: E/AndroidRuntime(27793): at java.lang.reflect.Method.invoke(Method.java:511)
05-31 11:27:08.005: E/AndroidRuntime(27793): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:812)
05-31 11:27:08.005: E/AndroidRuntime(27793): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:579)
05-31 11:27:08.005: E/AndroidRuntime(27793): at dalvik.system.NativeStart.main(Native Method)
05-31 11:27:08.005: E/AndroidRuntime(27793): Caused by: java.lang.NoSuchMethodException: onRadioButtonClicked [class android.view.View]
05-31 11:27:08.005: E/AndroidRuntime(27793): at java.lang.Class.getConstructorOrMethod(Class.java:460)
05-31 11:27:08.005: E/AndroidRuntime(27793): at java.lang.Class.getMethod(Class.java:915)
05-31 11:27:08.005: E/AndroidRuntime(27793): at android.view.View$1.onClick(View.java:3024)
05-31 11:27:08.005: E/AndroidRuntime(27793): ... 12 more