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Tracker Free Windows Portable 3 dagen gryld ovrkanten > tvkastenQ: TextView affecting each other I'm trying to get text Views to overlap so that they cover each other but I have no luck to achieve this. TextView textView1 = new TextView(this); TextView textView2 = new TextView(this); textView1.setText("text view 1"); textView2.setText("text view 2"); LinearLayout layout = new LinearLayout(this); layout.setOrientation(LinearLayout.HORIZONTAL); layout.addView(textView1); layout.addView(textView2); This makes them appear on top of each other and not overlap. Any ideas how I would get them to overlap? A: From the doc for LinearLayout: When adding views to this layout, you must specify either android:layout_width or android:layout_height to be larger than 0. The layout itself will scale its children based on the larger dimension: So it is not surprising that in your case both TextViews are placed at the right side of your LinearLayout, whose size is set to wrap_content Use android:layout_width instead of android:layout_height. For example, change it to: android:layout_width="wrap_content" and it should behave as you wanted. “Dragonfly” Ted2 Biosensor Could be a Key to Understanding Diseases In the journal Nature, researchers from the University of Toronto report an interesting new type of artificial RNA that attaches to DNA – the blueprint for all life – in the form of a nanoscale particle called a ribosome. And unlike previously-designed RNA-based biosensors, this type of protein carrier is able to perform reactions that mimic the complex chemical processes of a living cell. RNA is the master key of life: from the DNA, which encodes a specific set of instructions, to the proteins they make, like enzymes and antibodies, which are the drivers that guide cells and the body. While RNA is great at processing biochemical instructions, it doesn’t do anything by itself. Instead, RNA gets around by engaging in complex interactions with other molecules. It begins by forming a ribosome, a molecular machine that sequesters and translates the RNA. Using the ribosome as a guide, the RNA directs the formation of other molecules, like proteins and even other RNAs, which in turn perform more complex biochemical activities. Precise Control The researchers, among them faculty member Emanuel Shinavier and assistant professor of chemistry Jennifer Doudna, have designed a type of ribosome that holds not a single RNA molecule but a single protein. With this change, however, the artificial ribosome is able to participate in complex biochemical processes – but without any RNA at all. While all biological molecules participate in reactions via small organic molecules called cofactors, Shinavier says that life is one big reaction. Therefore, he says, the goal of the team was to come up with a protein that takes part in those reactions without a molecule of RNA. “RNA is so beautifully programmed to perform its job that it’s missing a lot of the complexity that is present in life,” Doudna says. “We wanted to harness the power of RNA but do the job of a protein. 84d34552a1
2 years ago