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我有一个布局按钮，它被设置为On Click = calculateClickHandler 当点击按钮时，应用程序以下面的logcat关闭。我不确定是否这是因为我试图在片段中做到这一点，并应该在主要活动中做到这一点？按钮ClickHandler不与片段一起工作
任何帮助，非常感谢。
10-23 15:59:30.929: E/AndroidRuntime(22388): FATAL EXCEPTION: main
10-23 15:59:30.929: E/AndroidRuntime(22388): java.lang.IllegalStateException: Could not find a method calculateClickHandler(View) in the activity class com.HealthKicks.bodystats.admob.MainActivity for onClick handler on view class android.widget.Button with id 'calculatewaist'
10-23 15:59:30.929: E/AndroidRuntime(22388): at android.view.View$1.onClick(View.java:3620)
10-23 15:59:30.929: E/AndroidRuntime(22388): at android.view.View.performClick(View.java:4240)
10-23 15:59:30.929: E/AndroidRuntime(22388): at android.view.View$PerformClick.run(View.java:17721)
10-23 15:59:30.929: E/AndroidRuntime(22388): at android.os.Handler.handleCallback(Handler.java:730)
10-23 15:59:30.929: E/AndroidRuntime(22388): at android.os.Handler.dispatchMessage(Handler.java:92)
10-23 15:59:30.929: E/AndroidRuntime(22388): at android.os.Looper.loop(Looper.java:137)
10-23 15:59:30.929: E/AndroidRuntime(22388): at android.app.ActivityThread.main(ActivityThread.java:5103)
10-23 15:59:30.929: E/AndroidRuntime(22388): at java.lang.reflect.Method.invokeNative(Native Method)
10-23 15:59:30.929: E/AndroidRuntime(22388): at java.lang.reflect.Method.invoke(Method.java:525)
10-23 15:59:30.929: E/AndroidRuntime(22388): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
10-23 15:59:30.929: E/AndroidRuntime(22388): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-23 15:59:30.929: E/AndroidRuntime(22388): at dalvik.system.NativeStart.main(Native Method)
10-23 15:59:30.929: E/AndroidRuntime(22388): Caused by: java.lang.NoSuchMethodException: calculateClickHandler [class android.view.View]
10-23 15:59:30.929: E/AndroidRuntime(22388): at java.lang.Class.getConstructorOrMethod(Class.java:423)
10-23 15:59:30.929: E/AndroidRuntime(22388): at java.lang.Class.getMethod(Class.java:787)
10-23 15:59:30.929: E/AndroidRuntime(22388): at android.view.View$1.onClick(View.java:3613)
10-23 15:59:30.929: E/AndroidRuntime(22388): ... 11 more
这里是片段代码：
package com.HealthKicks.bodystats.admob;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.TextView;
public class DummySectionFragment1 extends Fragment {
Button calculatewaist;
EditText waist_edit_text1;
RadioGroup gender_radio_group1;
RadioButton gender_radio_male, gender_radio_female;
Spinner waist_spinner;
TextView ideal, high, veryhigh;
String waist_unit, waist;
public static final String ARG_SECTION_NUMBER = "section_number";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.waist, container, false);
// get the references to the widgets
waist_spinner = (Spinner) rootView.findViewById(R.id.waist_spinner);
waist_edit_text1 = (EditText) rootView.findViewById(R.id.waist_edit_text1);
ideal = (TextView) rootView.findViewById(R.id.ideal);
high = (TextView) rootView.findViewById(R.id.high);
veryhigh = (TextView) rootView.findViewById(R.id.veryhigh);
gender_radio_male = (RadioButton) rootView.findViewById(R.id.gender_radio_male);
gender_radio_female = (RadioButton) rootView.findViewById(R.id.gender_radio_female);
calculatewaist = (Button) rootView.findViewById(R.id.calculatewaist);
return rootView;
}
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
calculateClickHandler(view);
}
void calculateClickHandler(View view) {
// TODO Auto-generated method stub
if (view.getId() == R.id.calculatewaist) {
// Get the users values from the widget references
waist_unit = waist_spinner.getSelectedItem().toString();
float waist = Float.parseFloat(waist_edit_text1.getText().toString());
// Convert Inches to CM
if (waist_unit.equals("INCHES")) {
waist = (float) (waist * 2.54);
}
// Interpret what Waist Circumference result means for male
if (waist < 94 && (gender_radio_male.isChecked())){
ideal.setTextColor(getResources().getColor(R.color.title_color));
} else if (waist < 103 && (gender_radio_male.isChecked())) {
high.setTextColor(getResources().getColor(R.color.title_color));
} else if (waist > 102 && (gender_radio_male.isChecked())) {
veryhigh.setTextColor(getResources().getColor(R.color.title_color));
}
// Interpret what Waist Circumference result means for female
if (waist < 80 && (gender_radio_female.isChecked())) {
ideal.setTextColor(getResources().getColor(R.color.title_color));
} else if (waist < 89 && (gender_radio_female.isChecked())) {
high.setTextColor(getResources().getColor(R.color.title_color));
} else if (waist > 88 && (gender_radio_female.isChecked())) {
veryhigh.setTextColor(getResources().getColor(R.color.title_color));
}
};
}
}
和主要活动代码：
package com.HealthKicks.bodystats.admob;
import java.util.Locale;
import android.app.ActionBar;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.TextView;
public class MainActivity extends FragmentActivity implements
ActionBar.TabListener {
EditText waist_edit_text1;
RadioGroup gender_radio_group1;
RadioButton gender_radio_male, gender_radio_female;
Spinner waist_spinner;
TextView ideal, high, veryhigh;
String waist_unit, waist;
/**
* The {@link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {@link android.support.v4.app.FragmentPagerAdapter} derivative, which
* will keep every loaded fragment in memory. If this becomes too memory
* intensive, it may be best to switch to a
* {@link android.support.v4.app.FragmentStatePagerAdapter}.
*/
SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {@link ViewPager} that will host the section contents.
*/
ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Set up the action bar.
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Create the adapter that will return a fragment for each of the three
// primary sections of the app.
mSectionsPagerAdapter = new SectionsPagerAdapter(
getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
// When swiping between different sections, select the corresponding
// tab. We can also use ActionBar.Tab#select() to do this if we have
// a reference to the Tab.
mViewPager
.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
actionBar.setSelectedNavigationItem(position);
}
});
// For each of the sections in the app, add a tab to the action bar.
for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
// Create a tab with text corresponding to the page title defined by
// the adapter. Also specify this Activity object, which implements
// the TabListener interface, as the callback (listener) for when
// this tab is selected.
actionBar.addTab(actionBar.newTab()
.setText(mSectionsPagerAdapter.getPageTitle(i))
.setTabListener(this));
}
}
private final String TAG = "Main Activity";
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
switch (item.getItemId())
{
case R.id.Refresh:
Log.i(TAG, "Refresh Item Clicked");
return true;
}
switch (item.getItemId())
{
case R.id.Info:
Log.i(TAG, "Info Item Clicked");
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void onTabSelected(ActionBar.Tab tab,
FragmentTransaction fragmentTransaction) {
// When the given tab is selected, switch to the corresponding page in
// the ViewPager.
mViewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(ActionBar.Tab tab,
FragmentTransaction fragmentTransaction) {
}
@Override
public void onTabReselected(ActionBar.Tab tab,
FragmentTransaction fragmentTransaction) {
}
/**
* A {@link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a DummySectionFragment (defined as a static inner class
// below) with the page number as its lone argument.
switch (position) {
case 0:
Fragment fragment = new DummySectionFragment();
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
case 1:
Fragment fragment1 = new DummySectionFragment1();
Bundle args1 = new Bundle();
args1.putInt(DummySectionFragment1.ARG_SECTION_NUMBER, position + 2);
fragment1.setArguments(args1);
return fragment1;
case 2:
Fragment fragment2 = new DummySectionFragment2();
Bundle args2 = new Bundle();
args2.putInt(DummySectionFragment2.ARG_SECTION_NUMBER, position + 3);
fragment2.setArguments(args2);
return fragment2;
case 3:
Fragment fragment3 = new DummySectionFragment3();
Bundle args3 = new Bundle();
args3.putInt(DummySectionFragment3.ARG_SECTION_NUMBER, position + 4);
fragment3.setArguments(args3);
return fragment3;
default:
return null;
}
}
@Override
public int getCount() {
// Show 4 total pages.
return 4;
}
@Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return getString(R.string.title_section1).toUpperCase(l);
case 1:
return getString(R.string.title_section2).toUpperCase(l);
case 2:
return getString(R.string.title_section3).toUpperCase(l);
case 3:
return getString(R.string.title_section4).toUpperCase(l);
}
return null;
}
}
}
我得到这个错误也和这并不是因为我在正确的活动中没有正确的方法。其他事情正在发生，但不知道是什么。 – Azurespot