Здравствуйте!
Прежде чем опишу проблему, выдам своих исходники по уроку. Работаю в android studio 3.1.3
XML
activity_main
| XML |
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| <?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:background="#000000">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="ShowTime"
android:id="@+id/Button1" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="ShowDate"
android:id="@+id/Button2"/>
</LinearLayout> |
|
| XML |
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| <?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">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:id="@+id/TextViewId"
android:textSize="50sp"
android:layout_marginTop="30dp"
android:layout_gravity="center_horizontal"/>
</LinearLayout> |
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| XML |
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| <?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">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:id="@+id/TextViewId"
android:textSize="50sp"
android:layout_marginTop="30dp"
android:layout_gravity="center_horizontal"/>
</LinearLayout> |
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Classes
MainActivity
| Java |
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| public class MainActivity extends AppCompatActivity implements View.OnClickListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button time = (Button) findViewById(R.id.Button1);
Button date = (Button) findViewById(R.id.Button2);
time.setOnClickListener(this);
date.setOnClickListener(this);
}
@Override
public void onClick(View view) {
Intent intent = null;
switch (view.getId()){
case R.id.Button1:
intent = new Intent("MyUserTime");
startActivity(intent);
break;
case R.id.Button2:
intent = new Intent("MyUserData");
startActivity(intent);
break;
}
}
} |
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| public class Main2Activity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
Intent intent = getIntent();
String action = intent.getAction();
String format ="", textInfo = "";
if (action.equals("MyUserTime")){
format = "HH:mm:ss";
textInfo = "Time: ";
} else if (action.equals("MyUserData")){
format = "dd.MM.yyyy";
textInfo = "Date: ";
}
SimpleDateFormat sdf = new SimpleDateFormat(format);
String datetime = sdf.format(new Date(System.currentTimeMillis()));
TextView tvDate = (TextView) findViewById(R.id.TextViewId);
tvDate.setText("Main2Activity: " + textInfo + datetime);
}
} |
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| public class Main3Activity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main3);
Intent intent = getIntent();
String action = intent.getAction();
String format ="", textInfo = "";
if (action.equals("MyUserTime")){
format = "HH:mm:ss";
textInfo = "Time: ";
} else if (action.equals("MyUserData")){
format = "dd.MM.yyyy";
textInfo = "Date: ";
}
SimpleDateFormat sdf = new SimpleDateFormat(format);
String datetime = sdf.format(new Date(System.currentTimeMillis()));
TextView tvDate = (TextView) findViewById(R.id.TextViewId2);
tvDate.setText("Main3Activity: " + textInfo + datetime);
}
} |
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| XML |
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| <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.smarthouseapplication.ms.myapplication">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Main2Activity"
android:label="Activity one">
<intent-filter>
<action android:name="MyUserTime" />
<action android:name="MyUserDate" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".Main3Activity"
android:label="Activity two">
<intent-filter>
<action android:name="MyUserTime" />
<action android:name="MyUserDate" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest> |
|
Моя проблема заключается в том, что когда я кликаю показать время, предлагает варианты выбора, т.е. какое окно открыть.
Когда я кликаю показать дату, то приложение вылетает.
Ничего понять не могу, где я косячу.
(
