java-如何在Android中使用带有’onCheckedChanged’方法的switch语句？
作者：互联网
我一直在努力使它起作用,我想要这样,以便可以将两个checkChanged放在一个OnCheckedChanged方法中.到目前为止,我没有任何帮助,但是像以前一样,只有一种情况,而没有switch语句.请您看看我的代码,看看如何修复它才能使它工作？
这是代码：
public class MainActivity extends Activity implements OnClickListener, OnCheckedChangeListener {
Button sensorButton;
Button newScreen;
Switch vibrateToggle;
Switch lightsToggle;
NotificationManager nm1;
NotificationManager nm2;
static final int uniqueID1 = 12345;
static final int uniqueID2 = 54321;
OnCheckedChangeListener vibrateListener;
OnCheckedChangeListener lightsListener;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sensorButton = (Button)this.findViewById(R.id.sensorButton);
sensorButton.setOnClickListener(this);
newScreen = (Button)this.findViewById(R.id.newScreen);
newScreen.setOnClickListener(this);
nm1 = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
nm1.cancel(uniqueID1);
nm2 = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
nm2.cancel(uniqueID2);
vibrateToggle = (Switch)this.findViewById(R.id.switch1);
vibrateToggle.setOnCheckedChangeListener(vibrateListener);
lightsToggle = (Switch)this.findViewById(R.id.lightSwitch);
lightsToggle.setOnCheckedChangeListener(lightsListener);
}
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
switch(buttonView.getId()){
case R.id.switch1:
Toast.makeText(this, "Vibrate Notification is " + (isChecked ? "ON" : "OFF"),
Toast.LENGTH_SHORT).show();
if (isChecked) {
// The toggle is enabled
Intent vibrateIntent = new Intent(this, MainActivity.class);
PendingIntent vibratePi = PendingIntent.getActivity(this, 0, vibrateIntent, 0);
NotificationCompat.Builder vibrateN = new NotificationCompat.Builder(this);
vibrateN.setContentIntent(vibratePi);
vibrateN.setDefaults(Notification.DEFAULT_VIBRATE);
Notification vn = vibrateN.build();
nm2.notify(uniqueID2, vn);
} else {
// The toggle is disabled
}
case R.id.lightSwitch:
Toast.makeText(this, "Lights Notification is " + (isChecked ? "ON" : "OFF"),
Toast.LENGTH_SHORT).show();
if (isChecked) {
// The toggle is enabled
Intent lightsIntent = new Intent(this, MainActivity.class);
PendingIntent lightsPi = PendingIntent.getActivity(this, 0, lightsIntent, 0);
NotificationCompat.Builder lightsN = new NotificationCompat.Builder(this);
lightsN.setContentIntent(lightsPi);
lightsN.setDefaults(Notification.DEFAULT_LIGHTS);
Notification ln = lightsN.build();
nm2.notify(uniqueID2, ln);
} else {
// The toggle is disabled
}
break;
}
}
这是我得到的日志猫：
03-14 16:46:21.139: D/dalvikvm(532): Not late-enabling CheckJNI (already on)
03-14 16:46:22.218: I/dalvikvm(532): threadid=3: reacting to signal 3
03-14 16:46:22.338: I/dalvikvm(532): Wrote stack traces to '/data/anr/traces.txt'
03-14 16:46:22.728: I/dalvikvm(532): threadid=3: reacting to signal 3
03-14 16:46:22.739: I/dalvikvm(532): Wrote stack traces to '/data/anr/traces.txt'
03-14 16:46:23.238: I/dalvikvm(532): threadid=3: reacting to signal 3
03-14 16:46:23.278: I/dalvikvm(532): Wrote stack traces to '/data/anr/traces.txt'
03-14 16:46:23.509: D/gralloc_goldfish(532): Emulator without GPU emulation detected.
03-14 16:46:25.258: D/AndroidRuntime(532): Shutting down VM
03-14 16:46:25.258: W/dalvikvm(532): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
03-14 16:46:25.288: E/AndroidRuntime(532): FATAL EXCEPTION: main
03-14 16:46:25.288: E/AndroidRuntime(532): java.lang.IllegalStateException: Could not find a method onSwitchToggle(View) in the activity class com.example.sensor.MainActivity for onClick handler on view class android.widget.Switch with id 'switch1'
03-14 16:46:25.288: E/AndroidRuntime(532): at android.view.View$1.onClick(View.java:3031)
03-14 16:46:25.288: E/AndroidRuntime(532): at android.view.View.performClick(View.java:3511)
03-14 16:46:25.288: E/AndroidRuntime(532): at android.widget.CompoundButton.performClick(CompoundButton.java:100)
03-14 16:46:25.288: E/AndroidRuntime(532): at android.view.View$PerformClick.run(View.java:14105)
03-14 16:46:25.288: E/AndroidRuntime(532): at android.os.Handler.handleCallback(Handler.java:605)
03-14 16:46:25.288: E/AndroidRuntime(532): at android.os.Handler.dispatchMessage(Handler.java:92)
03-14 16:46:25.288: E/AndroidRuntime(532): at android.os.Looper.loop(Looper.java:137)
03-14 16:46:25.288: E/AndroidRuntime(532): at android.app.ActivityThread.main(ActivityThread.java:4424)
03-14 16:46:25.288: E/AndroidRuntime(532): at java.lang.reflect.Method.invokeNative(Native Method)
03-14 16:46:25.288: E/AndroidRuntime(532): at java.lang.reflect.Method.invoke(Method.java:511)
03-14 16:46:25.288: E/AndroidRuntime(532): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
03-14 16:46:25.288: E/AndroidRuntime(532): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
03-14 16:46:25.288: E/AndroidRuntime(532): at dalvik.system.NativeStart.main(Native Method)
03-14 16:46:25.288: E/AndroidRuntime(532): Caused by: java.lang.NoSuchMethodException: onSwitchToggle [class android.view.View]
03-14 16:46:25.288: E/AndroidRuntime(532): at java.lang.Class.getConstructorOrMethod(Class.java:460)
03-14 16:46:25.288: E/AndroidRuntime(532): at java.lang.Class.getMethod(Class.java:915)
03-14 16:46:25.288: E/AndroidRuntime(532): at android.view.View$1.onClick(View.java:3024)
03-14 16:46:25.288: E/AndroidRuntime(532): ... 12 more
03-14 16:46:25.948: I/dalvikvm(532): threadid=3: reacting to signal 3
03-14 16:46:25.958: I/dalvikvm(532): Wrote stack traces to '/data/anr/traces.txt'
解决方法:
如在日志中：
NoSuchMethodException: onSwitchToggle [class android.view.View]
表示您已在Switch View xml中添加了android：onClick =“ onSwitchToggle”属性,但是您忘记在Activity代码中定义方法.
因为您要将setOnCheckedChangeListener()添加到Activity中的Switch View,所以不需要在XML中为Switch View设置onClick().只需从XML中删除android：onClick =“ onSwitchToggle”属性即可.
标签：switch-statement,oncheckedchanged,java,android 来源： https://codeday.me/bug/20191031/1973405.html