誰かがこのエラーに遭遇しましたか？
現在、android / eclipseでタブホストの最初のタブから2番目のタブに切り替えようとしています。しかし、アプリケーションTab_testingが予期せず停止したため、エミュレータを実行した後、もう一度やり直してください。
誰かがこれに対する解決策を見つけることができますか？
以下の私の情報源を見つけてください。
メインクラスのソース
public class Tab_testingActivity extends TabActivity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Resources res = getResources();
TabHost tabHost = getTabHost(); // The activity TabHost
TabHost.TabSpec spec; // Resusable TabSpec for each tab
Intent intent; // Reusable Intent for each tab
intent = new Intent().setClass(this, Activity_1.class);
spec = tabHost.newTabSpec("first").setIndicator("First").setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, Activity_2.class);
spec = tabHost.newTabSpec("second").setIndicator("Second").setContent(intent);
tabHost.addTab(spec);
tabHost.setCurrentTab(0);
}
}
* Activity_1 *
public class Activity_1 extends Activity {
EditText get;
Button save;
SharedPreferences sharedPreferences;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main1);
get=(EditText)findViewById(R.id.editText1);
save=(Button)findViewById(R.id.button1);
save.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if(get.getText().toString().equalsIgnoreCase("")){
Toast.makeText(getApplicationContext(), "enter something", Toast.LENGTH_SHORT).show();
}
else
{
sharedPreferences=PreferenceManager.getDefaultSharedPreferences(Activity_1.this);
Editor editor1 = sharedPreferences.edit();
editor1.remove("answer");
editor1.commit();
sharedPreferences=PreferenceManager.getDefaultSharedPreferences(Activity_1.this);
Editor editor = sharedPreferences.edit();
Log.i("set value",""+get.getText().toString());
editor.putString("answer",get.getText().toString());
editor.commit();}
}
});
}
}
* Activity_2 *
public class Activity_2 extends Activity {
TextView set;
SharedPreferences sharedPreferences;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main2);
set=(TextView)findViewById(R.id.textView1);
}
@Override
protected void onResume()
{
sharedPreferences = PreferenceManager.getDefaultSharedPreferences(Activity_2.this);
String answer= sharedPreferences.getString("answer", "");
Log.v("get value",""+answer);
if(answer.equalsIgnoreCase(null))
{
set.setText("nothing to display");
}
else
{
set.setText(answer);
}
super.onResume();
}
}
logcat
06-15 15:23:13.995: D/AndroidRuntime(523): Shutting down VM
06-15 15:23:13.995: W/dalvikvm(523): threadid=1: thread exiting with uncaught exception (group=0x40015560)
06-15 15:23:14.015: E/AndroidRuntime(523): FATAL EXCEPTION: main
06-15 15:23:14.015: E/AndroidRuntime(523): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.and.roid.host/com.and.roid.host.Tab_testingActivity}: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.and.roid.host/com.and.roid.host.Activity_1}; have you declared this activity in your AndroidManifest.xml?
06-15 15:23:14.015: E/AndroidRuntime(523): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.os.Handler.dispatchMessage(Handler.java:99)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.os.Looper.loop(Looper.java:123)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.app.ActivityThread.main(ActivityThread.java:3683)
06-15 15:23:14.015: E/AndroidRuntime(523): at java.lang.reflect.Method.invokeNative(Native Method)
06-15 15:23:14.015: E/AndroidRuntime(523): at java.lang.reflect.Method.invoke(Method.java:507)
06-15 15:23:14.015: E/AndroidRuntime(523): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
06-15 15:23:14.015: E/AndroidRuntime(523): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
06-15 15:23:14.015: E/AndroidRuntime(523): at dalvik.system.NativeStart.main(Native Method)
06-15 15:23:14.015: E/AndroidRuntime(523): Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.and.roid.host/com.and.roid.host.Activity_1}; have you declared this activity in your AndroidManifest.xml?
06-15 15:23:14.015: E/AndroidRuntime(523): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1405)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.app.ActivityThread.resolveActivityInfo(ActivityThread.java:1457)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:277)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:654)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.widget.TabHost.setCurrentTab(TabHost.java:326)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.widget.TabHost.addTab(TabHost.java:216)
06-15 15:23:14.015: E/AndroidRuntime(523): at com.and.roid.host.Tab_testingActivity.onCreate(Tab_testingActivity.java:27)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
06-15 15:23:14.015: E/AndroidRuntime(523): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
06-15 15:23:14.015: E/AndroidRuntime(523): ... 11 more