Difference between revisions of "First steps"
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(Created page with "Simple first program<br> 1. choose empty activity<br> 2. we will edit activity_main.xml and MainActivity.java<br> 3. use api level 16<br> 4. Get rid of "hello world" 5. Drag...") |
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| Line 12: | Line 12: | ||
}<br> | }<br> | ||
in oncreate<br> | in oncreate<br> | ||
| − | buttonBlue = (Button) findViewById(R.id.button_blueinvisible)<br> | + | button buttonblue;<br> |
| + | buttonBlue = (Button) findViewById(R.id.button_blueinvisible);<br> | ||
define button in main activity<br> | define button in main activity<br> | ||
if ( v.equlas(buttonblue)) then do the stuff<br> | if ( v.equlas(buttonblue)) then do the stuff<br> | ||
Toast.makeText(getApplicationcontext(), "asdfadsfa", Toast.LENGTH_SHORT.show()) | Toast.makeText(getApplicationcontext(), "asdfadsfa", Toast.LENGTH_SHORT.show()) | ||
Revision as of 15:51, 4 October 2017
Simple first program
1. choose empty activity
2. we will edit activity_main.xml and MainActivity.java
3. use api level 16
4. Get rid of "hello world"
5. Drag button
6 width = match parent, change background colour
7 changethe id of the button and also the text
8 onclick property, speccify the name of method
9. public void toDo(View v){
}
in oncreate
button buttonblue;
buttonBlue = (Button) findViewById(R.id.button_blueinvisible);
define button in main activity
if ( v.equlas(buttonblue)) then do the stuff
Toast.makeText(getApplicationcontext(), "asdfadsfa", Toast.LENGTH_SHORT.show())
