et2.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
et2 = (EditText) findViewById(R.id.editText2);
area = Math.PI * radius * radius;
String name = Double.toString(area);
et2.setText(name);
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
01-31 19:05:01.346: D/AndroidRuntime(650): Shutting down VM
01-31 19:05:01.346: W/dalvikvm(650): threadid=1: thread exiting with uncaught exception (group=0x40015560)
01-31 19:05:01.366: E/AndroidRuntime(650): FATAL EXCEPTION: main
01-31 19:05:01.366: E/AndroidRuntime(650): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.zlistactivity/com.example.zlistactivity.MainActivity}: java.lang.NumberFormatException:
01-31 19:05:01.366: E/AndroidRuntime(650): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
01-31 19:05:01.366: E/AndroidRuntime(650): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
01-31 19:05:01.366: E/AndroidRuntime(650): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
01-31 19:05:01.366: E/AndroidRuntime(650): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
01-31 19:05:01.366: E/AndroidRuntime(650): at android.os.Handler.dispatchMessage(Handler.java:99)
01-31 19:05:01.366: E/AndroidRuntime(650): at android.os.Looper.loop(Looper.java:123)
01-31 19:05:01.366: E/AndroidRuntime(650): at android.app.ActivityThread.main(ActivityThread.java:3683)
01-31 19:05:01.366: E/AndroidRuntime(650): at java.lang.reflect.Method.invokeNative(Native Method)
01-31 19:05:01.366: E/AndroidRuntime(650): at java.lang.reflect.Method.invoke(Method.java:507)
01-31 19:05:01.366: E/AndroidRuntime(650): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
01-31 19:05:01.366: E/AndroidRuntime(650): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
01-31 19:05:01.366: E/AndroidRuntime(650): at dalvik.system.NativeStart.main(Native Method)
01-31 19:05:01.366: E/AndroidRuntime(650): Caused by: java.lang.NumberFormatException:
01-31 19:05:01.366: E/AndroidRuntime(650): at org.apache.harmony.luni.util.FloatingPointParser.parseDouble(FloatingPointParser.java:267)
01-31 19:05:01.366: E/AndroidRuntime(650): at java.lang.Double.parseDouble(Double.java:318)
01-31 19:05:01.366: E/AndroidRuntime(650): at java.lang.Double.valueOf(Double.java:356)
01-31 19:05:01.366: E/AndroidRuntime(650): at com.example.zlistactivity.MainActivity.onCreate(MainActivity.java:22)
01-31 19:05:01.366: E/AndroidRuntime(650): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
01-31 19:05:01.366: E/AndroidRuntime(650): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
01-31 19:05:01.366: E/AndroidRuntime(650): ... 11 more
01-31 19:05:05.156: I/Process(650): Sending signal. PID: 650 SIG: 9
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