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我在Android的初學者。在這裏，試圖列表視圖添加到我的項目中，片段用於導航的抽屜裏。因此，我堅持以下錯誤。下面是我的活動代碼：在片段使用上下文
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.util.ArrayList;
public class Menu1 extends Fragment {
private ArrayList<Property> rentalProperties = new ArrayList<>();
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
//returning our layout file
//change R.layout.yourlayoutfilename for each of your fragments
return inflater.inflate(R.layout.fragment_all, container, false);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
//you can set the title for your toolbar here for different fragments different titles
getActivity().setTitle("All");
//create property elements
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_all);
//create our property elements
rentalProperties.add(new Property(10, "Smith Street", "Sydney", "NSW", "A large 3 bedroom apartment right in the heart of Sydney! A rare find, with 3 bedrooms and a secured car park.", 450.00, "property_image_1", 3, 1, 1, false));
rentalProperties.add(new Property(66, "King Street", "Sydney", "NSW", "A fully furnished studio apartment overlooking the harbour. Minutes from the CBD and next to transport, this is a perfect set-up for city living.", 320.00, "property_image_2", 1, 1, 1, false));
rentalProperties.add(new Property(1, "Liverpool Road", "Liverpool", "NSW", "A standard 3 bedroom house in the suburbs. With room for several cars and right next to shops this is perfect for new families.", 360.00, "property_image_3", 3, 2, 2, true));
rentalProperties.add(new Property(567, "Sunny Street", "Gold Coast", "QLD", "Come and see this amazing studio apartment in the heart of the gold coast, featuring stunning waterfront views.", 360.00, "property_image_4" , 1, 1, 1, false));
//create our new array adapter
ArrayAdapter<Property> adapter = new propertyArrayAdapter(this, 0, rentalProperties);
//Find list view and bind it with the custom adapter
ListView listView = (ListView) findViewById(R.id.customListView);
listView.setAdapter(adapter);
//add event listener so we can handle clicks
AdapterView.OnItemClickListener adapterViewListener = new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Property property = rentalProperties.get(position);
Intent intent = new Intent(Menu1.this, DetailActivity.class);
intent.putExtra("streetNumber", property.getStreetNumber());
intent.putExtra("streetName", property.getStreetName());
intent.putExtra("suburb", property.getSuburb());
intent.putExtra("state", property.getState());
intent.putExtra("image", property.getImage());
startActivityForResult(intent, 1000);
}
};
//set the listener to the list view
listView.setOnItemClickListener(adapterViewListener);
}
}
沒有顯示出三個錯誤，它們分別是：
1）的setContentView（R.layout.fragment_all）;
Error:(43, 9) error: cannot find symbol method setContentView(int)
2）ListView listView =（ListView）findViewById（R.id.customListView）;
Error:(55, 40) error: cannot find symbol method findViewById(int)
3）ArrayAdapter適配器=新propertyArrayAdapter（此，0， rentalProperties）; 4）Intent intent = new Intent（Menu1.this，DetailActivity.class）; 4）Intent intent = new Intent（Menu1.txt，
Error:(67, 33) error: no suitable constructor found for
Intent(Menu1,Class<DetailActivity>)
constructor Intent.Intent(String,Uri) is not applicable
(argument mismatch; Menu1 cannot be converted to String)
constructor Intent.Intent(Context,Class<?>) is not applicable
(argument mismatch; Menu1 cannot be converted to Context)
上面給出的問題通過下面給出的回答進行整流，標記爲回答。但是在這裏我遇到了佈局問題。佈局不適合屏幕，每邊都有一些空白區域。嘗試不同的佈局方法，但沒有改變。佈局代碼如下：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="700dp"
android:layout_height="400dp"
android:orientation="vertical"
android:paddingTop="-10dp"
android:paddingBottom="10dp">
<LinearLayout
android:id="@+id/infoSection"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:weightSum="1">
<TextView
android:id="@+id/filename"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:text="Filename"
android:textSize="15dp"
android:layout_weight="2.35" />
<ProgressBar
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/progressBar"
android:layout_weight="2.35"
android:layout_marginTop="-10dp"/>
</LinearLayout>
<RelativeLayout
android:id="@+id/pricingSection"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/infoSection"
android:orientation="vertical">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:text="Status"
android:layout_width="172dp"
android:layout_height="wrap_content"
android:id="@+id/status" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="15dp"
android:text="Size:"
android:layout_weight="1.07" />
<TextView
android:text="sz"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/size"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="15dp"
android:layout_toRightOf="@id/size"
android:text="Progress:"
android:layout_weight="0.36" />
<TextView
android:text="pg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/progress"
android:layout_weight="1.65" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Speed:"
android:layout_marginLeft="25dp"
android:layout_toRightOf="@+id/progress"
android:layout_weight="0.87" />
<TextView
android:text="sp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/speed"
android:layout_weight="1.86" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
http://stackoverflow.com/questions/21205732/converting-activity-into-fragment，http://stackoverflow.com/questions/35785049/converting-an-activity-to-a-fragment，http：/ /stackoverflow.com/questions/24604802/how-to-change-activity-to-fragment，http://stackoverflow.com/questions/8215308/using-context-in-a-fragment –
in fragment'onCreateView' return view必須在'Fragment'中顯示，不要在'Fragment'中使用'setContentView' –
請閱讀[在什麼情況下我可以在我的問題中添加「urgent」或其他類似的短語，以獲得更快的答案？]（ https://meta.stackoverflow.com/q/326569） - 總結是，這不是解決志願者的理想方式，並且可能會對獲得答案起反作用。請不要將這添加到您的問題。 – halfer