我的RelativeLayout没有显示最新的addView（）

时间：2018-11-26 01:23:40

标签： java android layout android-relativelayout

我正在尝试通过编程方式在RelativeLayout的{​​{1}}上将孩子RelativeLayout添加到父母Fragment。但是，运行我的应用程序后，它没有通过onCreateView()添加的子布局。

我创建了一个函数，用于返回以编程方式创建的RelativeLayout.addView()。

下面是该函数的相应冗长代码，因为返回的RelativeLayout的层次结构非常大：

RelativeLayout

在片段的private RelativeLayout createCards() { RelativeLayout relativeLayout = new RelativeLayout(getContext()); RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams((int) (250 * scale + 0.5f), (int) (400 * scale + 0.5f)); layoutParams.setMargins(0, 0, (int) (15 * scale + 0.5f), 0); relativeLayout.setLayoutParams(layoutParams); relativeLayout.setBackgroundResource(R.drawable.thought_diary_list_blue); relativeLayout.setClickable(true); relativeLayout.setFocusable(true); relativeLayout.setPadding((int) (8 * scale + 0.5f), (int) (90 * scale + 0.5f), (int) (8 * scale + 0.5f), (int) (80 * scale + 0.5f)); relativeLayout.setId(View.generateViewId()); RelativeLayout firstRow = new RelativeLayout(getContext()); RelativeLayout.LayoutParams firstRowLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams .WRAP_CONTENT); firstRowLayoutParams.setMargins((int) (10 * scale + 0.5f), 0, (int) (10 * scale + 0.5f), 0); firstRow.setPadding(0, (int) (20 * scale + 0.5f), 0, 0); firstRow.setLayoutParams(firstRowLayoutParams); firstRow.setId(View.generateViewId()); LinearLayout linearLayout = new LinearLayout(getContext()); LinearLayout.LayoutParams linearLayoutParams = new LinearLayout.LayoutParams((int) (40 * scale + 0.5f), LinearLayout.LayoutParams.WRAP_CONTENT); linearLayout.setOrientation(LinearLayout.VERTICAL); linearLayout.setLayoutParams(linearLayoutParams); TextView dateTextView = new TextView(getContext()); LinearLayout.LayoutParams dateTextViewLayoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); dateTextView.setTypeface(Typeface.create("avenir", Typeface.BOLD)); dateTextView.setText("16"); dateTextView.setTextAlignment(View.TEXT_ALIGNMENT_CENTER); dateTextView.setTextColor(Color.parseColor("#fff000")); dateTextView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 22); dateTextView.setLayoutParams(dateTextViewLayoutParams); TextView monthTextView = new TextView(getContext()); LinearLayout.LayoutParams monthTextViewLayoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); monthTextView.setTypeface(Typeface.create("avenir", Typeface.NORMAL)); monthTextView.setText("NOV"); monthTextView.setTextAlignment(View.TEXT_ALIGNMENT_CENTER); monthTextView.setTextColor(Color.parseColor("#fff000")); monthTextView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 22); monthTextView.setLayoutParams(monthTextViewLayoutParams); TextView yearTextView = new TextView(getContext()); LinearLayout.LayoutParams yearTextViewLayoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); yearTextView.setTypeface(Typeface.create("avenir", Typeface.NORMAL)); yearTextView.setText("1998"); yearTextView.setTextAlignment(View.TEXT_ALIGNMENT_CENTER); yearTextView.setTextColor(Color.parseColor("#fff000")); yearTextView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 22); yearTextView.setLayoutParams(yearTextViewLayoutParams); linearLayout.addView(dateTextView); linearLayout.addView(monthTextView); linearLayout.addView(yearTextView); ImageView imageView = new ImageView(getContext()); RelativeLayout.LayoutParams imageViewLayoutParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); imageViewLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_END); imageView.setLayoutParams(imageViewLayoutParams); imageView.setBackgroundResource(R.drawable.icon_vertical_threedots); firstRow.addView(linearLayout); firstRow.addView(imageView); relativeLayout.addView(firstRow); RelativeLayout secondRow = new RelativeLayout(getContext()); RelativeLayout.LayoutParams secondRowLayoutParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); secondRowLayoutParams.addRule(RelativeLayout.BELOW, firstRow.getId()); secondRowLayoutParams.setMargins(0, (int) (20 * scale + 0.5f), 0, 0); secondRow.setId(View.generateViewId()); secondRow.setLayoutParams(secondRowLayoutParams); ImageView secondRowImageView = new ImageView(getContext()); RelativeLayout.LayoutParams secondRowImageViewLayoutParams = new RelativeLayout.LayoutParams((int) (250 * scale + 0.5f), (int) (150 * scale + 0.5f)); secondRowImageViewLayoutParams.addRule(RelativeLayout.CENTER_IN_PARENT); secondRowImageView.setBackgroundResource(R.drawable.td1); secondRowImageView.setLayoutParams(secondRowLayoutParams); secondRow.addView(secondRowImageView); relativeLayout.addView(secondRow); RelativeLayout thirdRow = new RelativeLayout(getContext()); RelativeLayout.LayoutParams thirdRowLayoutParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); thirdRowLayoutParams.addRule(RelativeLayout.BELOW, secondRow.getId()); thirdRowLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM); thirdRowLayoutParams.setMargins((int) (10 * scale + 0.5f), 0, (int) (10 * scale + 0.5f), (int) (30 * scale + 0.5f)); thirdRow.setGravity(Gravity.BOTTOM); thirdRow.setLayoutParams(thirdRowLayoutParams); TextView thirdRowTextView = new TextView(getContext()); RelativeLayout.LayoutParams thirdRowTextViewLayoutParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams .WRAP_CONTENT); thirdRowTextViewLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_END); thirdRowTextView.setTypeface(Typeface.create("avenir", Typeface.BOLD)); thirdRowTextView.setText("12:00AM"); thirdRowTextView.setTextColor(Color.parseColor("#fff000")); thirdRowTextView.setLayoutParams(thirdRowTextViewLayoutParams); thirdRow.addView(thirdRowTextView); relativeLayout.addView(thirdRow); return relativeLayout; } 上调用此函数，如下所示：

onCreateView

我承认，我在Android编程方面有点新。

预期结果应该是这样的视图：

enter image description here

更新：

在此处添加我的XML布局：

@Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        final View view = inflater.inflate(R.layout.fragment_diary, container, false);

        RelativeLayout writeDiary = view.findViewById(R.id.writeDiary);
        writeDiary.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                Intent i=  new Intent(getActivity(),WriteDiary.class);
                startActivity(i);
            }



        });

        ImageView imageView= view.findViewById(R.id.listIcon);
        imageView.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                Intent i=  new Intent(getActivity(),ListThoughts.class);
                startActivity(i);
            }
        });

        scale = getContext().getResources().getDisplayMetrics().density;

        diary_mainLinearLayout = getActivity().findViewById(R.id.diary_mainLinearLayout);

        if (diary_mainLinearLayout != null) {
            diary_mainLinearLayout.addView(createCards());
        }

        return view;
    }

更新2： 我已经设法使其在<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#f4f2fb" android:gravity="center" android:paddingTop="15dp" tools:context=".modules.diary.DiaryFragment"> <ScrollView android:layout_width="match_parent" android:layout_height="wrap_content"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:paddingTop="40dp"> <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageView android:id="@+id/listIcon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentEnd="true" android:layout_marginRight="30dp" android:layout_marginBottom="10dp" android:clickable="true" android:foreground="?android:attr/selectableItemBackground" android:src="@drawable/ic_list_black_24dp" /> </RelativeLayout> <ScrollView android:id="@+id/horScroll" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginTop="30dp" android:layout_marginBottom="30dp"> <HorizontalScrollView android:layout_width="wrap_content" android:layout_height="wrap_content" android:scrollbars="none"> <LinearLayout android:layout_width="wrap_content" android:layout_height="match_parent" android:orientation="horizontal" android:id="@+id/diary_mainLinearLayout"> <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="30dp" android:layout_marginRight="30dp" android:fontFamily="@font/avenir_bold" android:text="My Thoughts" android:textSize="25sp" /> </RelativeLayout> <RelativeLayout android:id="@+id/writeDiary" android:layout_width="250dp" android:layout_height="400dp" android:layout_marginRight="15dp" android:background="@drawable/thought_diary_list" android:clickable="true" android:focusable="true" android:foreground="?android:attr/selectableItemBackground" android:paddingStart="8dp" android:paddingTop="90dp" android:paddingEnd="8dp" android:paddingBottom="80dp"> <TextView android:layout_width="match_parent" android:layout_height="215dp" android:drawableTop="@drawable/td" android:fontFamily="@font/avenir_regular" android:gravity="center" android:text="SHARE YOUR THOUGHTS" android:textColor="#fff" android:textSize="15sp" /> </RelativeLayout> <RelativeLayout android:id="@+id/writeDiary2" android:layout_width="250dp" android:layout_height="400dp" android:layout_marginEnd="15dp" android:background="@drawable/thought_diary_list_blue" android:clickable="true" android:focusable="true" android:foreground="?android:attr/selectableItemBackground" android:paddingStart="8dp" android:paddingEnd="8dp"> <RelativeLayout android:id="@+id/firstRow" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginStart="10dp" android:layout_marginEnd="10dp" android:orientation="horizontal" android:paddingTop="20dp"> <LinearLayout android:layout_width="40dp" android:layout_height="wrap_content" android:layout_alignParentStart="true" android:orientation="vertical"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:fontFamily="@font/avenir_bold" android:text="@string/date" android:textAlignment="center" android:textColor="#fff" android:textSize="22sp" /> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:fontFamily="@font/avenir_regular" android:text="@string/month" android:textAlignment="center" android:textColor="#fff" android:textSize="15sp" /> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:fontFamily="@font/avenir_regular" android:text="@string/year" android:textAlignment="center" android:textColor="#fff" android:textSize="12sp" /> </LinearLayout> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentEnd="true" android:src="@drawable/icon_vertical_threedots" /> </RelativeLayout> <RelativeLayout android:id="@+id/secondRow" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@id/firstRow" android:layout_marginTop="20dp"> <ImageView android:layout_width="250dp" android:layout_height="150dp" android:layout_centerInParent="true" android:src="@drawable/td1" /> </RelativeLayout> <RelativeLayout android:id="@+id/thirdRow" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/secondRow" android:layout_alignParentBottom="true" android:layout_marginStart="10dp" android:layout_marginEnd="10dp" android:layout_marginBottom="30dp" android:gravity="bottom"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentEnd="true" android:fontFamily="@font/avenir_bold" android:text="@string/time" android:textColor="@color/white" /> </RelativeLayout> </RelativeLayout> <RelativeLayout android:id="@+id/writeDiary3" android:layout_width="250dp" android:layout_height="400dp" android:layout_marginEnd="15dp" android:background="@drawable/thought_diary_list_yellow" android:clickable="true" android:focusable="true" android:foreground="?android:attr/selectableItemBackground" android:paddingStart="8dp" android:paddingTop="90dp" android:paddingEnd="8dp" android:paddingBottom="80dp"> <TextView android:layout_width="match_parent" android:layout_height="215dp" android:drawableTop="@drawable/td" android:fontFamily="@font/avenir_regular" android:gravity="center" android:text="SHARE YOUR THOUGHTS" android:textColor="#fff" android:textSize="15sp" /> </RelativeLayout> <RelativeLayout android:id="@+id/writeDiary4" android:layout_width="250dp" android:layout_height="400dp" android:layout_marginRight="15dp" android:background="@drawable/thought_diary_list" android:clickable="true" android:focusable="true" android:foreground="?android:attr/selectableItemBackground" android:paddingStart="8dp" android:paddingTop="90dp" android:paddingEnd="8dp" android:paddingBottom="80dp"> <TextView android:layout_width="match_parent" android:layout_height="215dp" android:drawableTop="@drawable/td" android:fontFamily="@font/avenir_regular" android:gravity="center" android:text="SHARE YOUR THOUGHTS" android:textColor="#fff" android:textSize="15sp" /> </RelativeLayout> </LinearLayout> </HorizontalScrollView> </ScrollView> <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="50dp" android:orientation="horizontal"> <ImageView android:id="@+id/addIcon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentEnd="true" android:layout_alignParentBottom="true" android:layout_marginEnd="30dp" android:background="@drawable/ovalpurple" android:clickable="true" android:focusable="true" android:foreground="?android:attr/selectableItemBackground" android:src="@drawable/icon_addition" /> </RelativeLayout> </LinearLayout> </ScrollView> </RelativeLayout> 方法上执行addView()的工作。干杯

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