Ask for dynamic generation code using Android Linear Layout for statement

Asked 2 years ago, Updated 2 years ago, 90 views

I'm making a program that makes a 365-day button to make a year's calendar, but as I set Layout every week, the coding gets too long if I do it, so I tried to use an arrangement using a for statement, but the application was not executed and it was forced to end. I will attach the XML and Java code.

===============JAVA===========

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    ScrollView scrollView;
    LinearLayout Cal1;
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        MenuInflater mInflater = getMenuInflater();
        mInflater.inflate(R.menu.menu1, menu);
        return true;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Cal1 = (LinearLayout)findViewById(R.id.calendar1);
        LinearLayout linear[] = new LinearLayout[54];


        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);
        params.weight = 1;

        final Button btn[] = new Button[368];
        for (int i = 0; i < 368; i++) {
            btn[i] = new Button(this);
            btn[i].setWidth(20);
            btn[i].setTextSize(11);
            btn[i].setBackgroundColor(Color.WHITE);
            btn[i].setId(i);
        }

        for (int i = 0; i<7; i++){
            for(int j =1; j<54; j++){
                linear[i] = new LinearLayout(this);
                linear[j].addView(btn[i + ((j-1) * 7)],params);
                linear[i].addView(btn[i], params);
                Cal1.addView(linear[i]);
            }
        }

        for (int i = 0; i < 3; i++) {
            btn[i].setText("");

        }
        for (int i = 3; i < 7; i++) {
            btn[i].setText("" + (i - 2));

        }
        for (int i = 7; i < 14; i++) {
            btn[i].setText("" + (i - 2));

        }

        for (int i = 14; i < 21; i++) {
            btn[i].setText("" + (i - 2));

        }

        for (int i = 21; i < 28; i++) {
            btn[i].setText("" + (i - 2));

        }
        for (int i = 28; i < 32; i++) {
            btn[i].setText("" + (i - 2));

        }
        for (int i = 32; i < 34; i++){
            btn[i].setText(""+ (i - 2));

        }
        for (int i = 34; i < 35; i++){
            btn[i].setText("");

        } //
        for (int i = 35; i < 41; i++) {
            btn[i].setText("" );

        }
        for (int i = 41; i < 42; i++) {
            btn[i].setText("" + (i - 40));

        }
        for (int i = 42; i < 49; i++) {
            btn[i].setText("" + (i - 40));

        }

        for (int i = 49; i < 56; i++) {
            btn[i].setText("" + (i - 40));

        }

        for (int i = 56; i < 63; i++) {
            btn[i].setText("" + (i - 40));

        }
        for (int i = 63; i < 70; i++) {
            btn[i].setText("" + (i - 40));

        }//February
    }
}

==================XML=====================

<LinearLayout 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="wrap_content"
    tools:context=".MainActivity"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:animateLayoutChanges="true"
        android:background="#000"
        android:orientation="horizontal">

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:padding="10dp"
            android:text="2020 Scroll Calendar"
            android:textSize="20dp"
            android:textColor="#FFF"/>

        <Button
            android:layout_width="80dp"
            android:layout_height="wrap_content"
            android:text="Today"/>
        <Button
            android:layout_width="80dp"
            android:layout_height="wrap_content"
            android:text="View Method"/>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:background="#000"
        android:orientation="horizontal">
        <TextView
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:textSize="20dp"
            android:text="January"
            android:textColor="#fff">
        </TextView>

    </LinearLayout>

    <!--Day-->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="20dp"
        android:gravity="top"
        android:background="#eaeae9"
        android:orientation="horizontal">

        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="work"
            android:textSize="9sp"
            android:textColor="#FF0000" />


        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="Month"
            android:textColor="#000000"
            android:textSize="9sp" />

        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="hwa"
            android:textColor="#000000"
            android:textSize="9sp" />

        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="number"
            android:textColor="#000000"
            android:textSize="9sp" />

        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="neck"
            android:textColor="#000000"
            android:textSize="9sp" />

        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="Gold"
            android:textColor="#000000"
            android:textSize="9sp" />

        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"

            android:text="to"
            android:textSize="9sp"
            android:textColor="#0067a3"/>

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/calendar1"
        android:orientation="horizontal">
    </LinearLayout>


</LinearLayout>

android loops for calendar

2022-09-20 21:52

2 Answers

If you are going to make a calendar, use recyclerview.


2022-09-20 21:52

I posted a new question I'm sorry that I couldn't delete it because someone else replied.


2022-09-20 21:52

If you have any answers or tips


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