Dashboard Not showing icons android

Question

I am trying to design a dashboard for my android application taking guidance from the following link:

http://www.androidhive.info/2011/12/android-dashboard-design-tutorial/

But the issue I am facing is that icons are not getting displayed. I am getting a blank display with the blue activity background color as set. But dashboard icons arenot shown. My code is like this:

Class files:

package kanix.highrise.com.db;

import android.app.Activity;
import android.content.Intent;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;


public class AndroidDashboardDesignActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.dashboard_layout);

        /**
         * Creating all buttons instances
         * */
        // Dashboard News feed button
        Button btn_newsfeed = (Button) findViewById(R.id.btn_news_feed);

        // Dashboard Friends button
        Button btn_friends = (Button) findViewById(R.id.btn_friends);

        // Dashboard Messages button
        Button btn_messages = (Button) findViewById(R.id.btn_messages);

        // Dashboard Places button
        Button btn_places = (Button) findViewById(R.id.btn_places);

        // Dashboard Events button
        Button btn_events = (Button) findViewById(R.id.btn_events);

        // Dashboard Photos button
        Button btn_photos = (Button) findViewById(R.id.btn_photos);

        /**
         * Handling all button click events
         * */

        // Listening to News Feed button click
        btn_newsfeed.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                // Launching News Feed Screen
              //  Intent i = new Intent(getApplicationContext(), NewsFeedActivity.class);
               // startActivity(i);
            }
        });

        // Listening Friends button click
        btn_friends.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                // Launching News Feed Screen
             //   Intent i = new Intent(getApplicationContext(), FriendsActivity.class);
             //   startActivity(i);
            }
        });

        // Listening Messages button click
        btn_messages.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                // Launching News Feed Screen
             //   Intent i = new Intent(getApplicationContext(), MessagesActivity.class);
             //   startActivity(i);
            }
        });

        // Listening to Places button click
        btn_places.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                // Launching News Feed Screen
               // Intent i = new Intent(getApplicationContext(), PlacesActivity.class);
               // startActivity(i);
            }
        });

        // Listening to Events button click
        btn_events.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                // Launching News Feed Screen
              //  Intent i = new Intent(getApplicationContext(), EventsActivity.class);
              //  startActivity(i);
            }
        });

        // Listening to Photos button click
        btn_photos.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                // Launching News Feed Screen
             //   Intent i = new Intent(getApplicationContext(), PhotosActivity.class);
              //  startActivity(i);
            }
        });
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_android_dashboard_design, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

another class

package kanix.highrise.com.db;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;

/**
 * Created by Mubashir.gul on 30/04/2015.
 */
public class DashboardLayout extends ViewGroup {

    private static final int UNEVEN_GRID_PENALTY_MULTIPLIER = 10;

    private int mMaxChildWidth = 0;
    private int mMaxChildHeight = 0;

    public DashboardLayout(Context context) {
        super(context, null);
    }

    public DashboardLayout(Context context, AttributeSet attrs) {
        super(context, attrs, 0);
    }

    public DashboardLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        mMaxChildWidth = 0;
        mMaxChildHeight = 0;

        // Measure once to find the maximum child size.

        int childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(
                MeasureSpec.getSize(widthMeasureSpec), MeasureSpec.AT_MOST);
        int childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(
                MeasureSpec.getSize(widthMeasureSpec), MeasureSpec.AT_MOST);

        final int count = getChildCount();
        for (int i = 0; i < count; i++) {
            final View child = getChildAt(i);
            if (child.getVisibility() == GONE) {
                continue;
            }

            child.measure(childWidthMeasureSpec, childHeightMeasureSpec);

            mMaxChildWidth = Math.max(mMaxChildWidth, child.getMeasuredWidth());
            mMaxChildHeight = Math.max(mMaxChildHeight, child.getMeasuredHeight());
        }

        // Measure again for each child to be exactly the same size.

        childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(
                mMaxChildWidth, MeasureSpec.EXACTLY);
        childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(
                mMaxChildHeight, MeasureSpec.EXACTLY);

        for (int i = 0; i < count; i++) {
            final View child = getChildAt(i);
            if (child.getVisibility() == GONE) {
                continue;
            }

            child.measure(childWidthMeasureSpec, childHeightMeasureSpec);
        }

        setMeasuredDimension(
                resolveSize(mMaxChildWidth, widthMeasureSpec),
                resolveSize(mMaxChildHeight, heightMeasureSpec));
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        int width = r - l;
        int height = b - t;

        final int count = getChildCount();

        // Calculate the number of visible children.
        int visibleCount = 0;
        for (int i = 0; i < count; i++) {
            final View child = getChildAt(i);
            if (child.getVisibility() == GONE) {
                continue;
            }
            ++visibleCount;
        }

        if (visibleCount == 0) {
            return;
        }

        // Calculate what number of rows and columns will optimize for even horizontal and
        // vertical whitespace between items. Start with a 1 x N grid, then try 2 x N, and so on.
        int bestSpaceDifference = Integer.MAX_VALUE;
        int spaceDifference;

        // Horizontal and vertical space between items
        int hSpace = 0;
        int vSpace = 0;

        int cols = 1;
        int rows;

        while (true) {
            rows = (visibleCount - 1) / cols + 1;

            hSpace = ((width - mMaxChildWidth * cols) / (cols + 1));
            vSpace = ((height - mMaxChildHeight * rows) / (rows + 1));

            spaceDifference = Math.abs(vSpace - hSpace);
            if (rows * cols != visibleCount) {
                spaceDifference *= UNEVEN_GRID_PENALTY_MULTIPLIER;
            }

            if (spaceDifference < bestSpaceDifference) {
                // Found a better whitespace squareness/ratio
                bestSpaceDifference = spaceDifference;

                // If we found a better whitespace squareness and there's only 1 row, this is
                // the best we can do.
                if (rows == 1) {
                    break;
                }
            } else {
                // This is a worse whitespace ratio, use the previous value of cols and exit.
                --cols;
                rows = (visibleCount - 1) / cols + 1;
                hSpace = ((width - mMaxChildWidth * cols) / (cols + 1));
                vSpace = ((height - mMaxChildHeight * rows) / (rows + 1));
                break;
            }

            ++cols;
        }

        // Lay out children based on calculated best-fit number of rows and cols.

        // If we chose a layout that has negative horizontal or vertical space, force it to zero.
        hSpace = Math.max(0, hSpace);
        vSpace = Math.max(0, vSpace);

        // Re-use width/height variables to be child width/height.
        width = (width - hSpace * (cols + 1)) / cols;
        height = (height - vSpace * (rows + 1)) / rows;

        int left, top;
        int col, row;
        int visibleIndex = 0;
        for (int i = 0; i < count; i++) {
            final View child = getChildAt(i);
            if (child.getVisibility() == GONE) {
                continue;
            }

            row = visibleIndex / cols;
            col = visibleIndex % cols;

            left = hSpace * (col + 1) + width * col;
            top = vSpace * (row + 1) + height * row;

            child.layout(left, top,
                    (hSpace == 0 && col == cols - 1) ? r : (left + width),
                    (vSpace == 0 && row == rows - 1) ? b : (top + height));
            ++visibleIndex;
        }
    }
}

My xml files are like this:

actionbar_layout.xml

/>

dashboard_layout.xml

fragment_layout.xml

footer_layout.xml

My Styles.xml file is like this:

I dont know where I am doing wrong tried so many things. Also I am using same image on all icons.

Harsh Dattani · Accepted Answer

Icons aren't getting displayed because, you could have not kept images inside drawable folder.

See, android:drawableTop="@drawable/btn_newsfeed" this code indicates that there will be "newsfeed" icon, above text "News Feed". You have to keep image file inside drawable folder with name btn_newsfeed, similarly for other Button images also.

Hope this will help you, if its unclear to understand, you can comment and ask.

Dashboard Not showing icons android

Answers (1)

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