运行结果
MainActivity.java
实现了三种效果,旋转,改变大小以及背景颜色
public class MainActivity extends AppCompatActivity {
private Button button2,button1,button3;
private boolean a=true,b=true;
private float xuanzhuan=0;
private ImageView imageView3,imageView1,imageView2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button1=(Button) findViewById(R.id.button1);
button2=(Button) findViewById(R.id.button2);
button3=(Button) findViewById(R.id.button3);
imageView1=(ImageView) findViewById(R.id.imageView1);
imageView2=(ImageView) findViewById(R.id.imageView2);
imageView3=(ImageView) findViewById(R.id.imageView3);
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
xuanzhuan+=20;
imageView1.setRotation(xuanzhuan);
}
});
button2.setOnClickListener(ne