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DpiTestActivity.javaAPI DocAndroid 1.5 API6251Wed May 06 22:42:02 BST 2009com.google.android.test.dpi

DpiTestActivity

public class DpiTestActivity extends android.app.Activity

Fields Summary
Constructors Summary
Methods Summary
private voidaddBitmapDrawable(android.widget.LinearLayout layout, int resource, boolean scale)

        Bitmap bitmap;
        bitmap = loadAndPrintDpi(resource, scale);

        View view = new View(this);

        final BitmapDrawable d = new BitmapDrawable(bitmap);
        if (!scale) d.setDensityScale(getResources().getDisplayMetrics());
        view.setBackgroundDrawable(d);

        view.setLayoutParams(new LinearLayout.LayoutParams(d.getIntrinsicWidth(),
                d.getIntrinsicHeight()));
        layout.addView(view);
    
private voidaddCanvasBitmap(android.widget.LinearLayout layout, int resource, boolean scale)

        Bitmap bitmap;
        bitmap = loadAndPrintDpi(resource, scale);

        ScaledBitmapView view = new ScaledBitmapView(this, bitmap);

        view.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT));
        layout.addView(view);
    
private voidaddChildToRoot(android.widget.LinearLayout root, android.widget.LinearLayout layout)

        root.addView(layout, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,
                LinearLayout.LayoutParams.WRAP_CONTENT));
    
private voidaddLabelToRoot(android.widget.LinearLayout root, java.lang.String text)

        TextView label = new TextView(this);
        label.setText(text);
        root.addView(label, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,
                LinearLayout.LayoutParams.WRAP_CONTENT));
    
private voidaddResourceDrawable(android.widget.LinearLayout layout, int resource)

        View view = new View(this);

        final Drawable d = getResources().getDrawable(resource);
        view.setBackgroundDrawable(d);

        view.setLayoutParams(new LinearLayout.LayoutParams(d.getIntrinsicWidth(),
                d.getIntrinsicHeight()));
        layout.addView(view);
    
private android.graphics.BitmaploadAndPrintDpi(int id, boolean scale)

        Bitmap bitmap;
        if (scale) {
            bitmap = BitmapFactory.decodeResource(getResources(), id);
        } else {
            BitmapFactory.Options opts = new BitmapFactory.Options();
            opts.inScaled = false;
            bitmap = BitmapFactory.decodeResource(getResources(), id, opts);
        }
        return bitmap;
    
protected voidonCreate(android.os.Bundle savedInstanceState)

        super.onCreate(savedInstanceState);

        LinearLayout root = new LinearLayout(this);
        root.setOrientation(LinearLayout.VERTICAL);

        LinearLayout layout = new LinearLayout(this);
        addBitmapDrawable(layout, R.drawable.logo120dpi, true);
        addBitmapDrawable(layout, R.drawable.logo160dpi, true);
        addBitmapDrawable(layout, R.drawable.logo240dpi, true);
        addLabelToRoot(root, "Prescaled bitmap in drawable");
        addChildToRoot(root, layout);

        layout = new LinearLayout(this);
        addBitmapDrawable(layout, R.drawable.logo120dpi, false);
        addBitmapDrawable(layout, R.drawable.logo160dpi, false);
        addBitmapDrawable(layout, R.drawable.logo240dpi, false);
        addLabelToRoot(root, "Autoscaled bitmap in drawable");
        addChildToRoot(root, layout);

        layout = new LinearLayout(this);
        addResourceDrawable(layout, R.drawable.logo120dpi);
        addResourceDrawable(layout, R.drawable.logo160dpi);
        addResourceDrawable(layout, R.drawable.logo240dpi);
        addLabelToRoot(root, "Prescaled resource drawable");
        addChildToRoot(root, layout);

        layout = new LinearLayout(this);
        addCanvasBitmap(layout, R.drawable.logo120dpi, true);
        addCanvasBitmap(layout, R.drawable.logo160dpi, true);
        addCanvasBitmap(layout, R.drawable.logo240dpi, true);
        addLabelToRoot(root, "Prescaled bitmap");
        addChildToRoot(root, layout);

        layout = new LinearLayout(this);
        addCanvasBitmap(layout, R.drawable.logo120dpi, false);
        addCanvasBitmap(layout, R.drawable.logo160dpi, false);
        addCanvasBitmap(layout, R.drawable.logo240dpi, false);
        addLabelToRoot(root, "Autoscaled bitmap");
        addChildToRoot(root, layout);

        setContentView(scrollWrap(root));
    
private android.view.ViewscrollWrap(android.view.View view)

        ScrollView scroller = new ScrollView(this);
        scroller.addView(view, new ScrollView.LayoutParams(ScrollView.LayoutParams.FILL_PARENT,
                ScrollView.LayoutParams.FILL_PARENT));
        return scroller;