Question

android开发中当点击Button时将ImageView中原有的图片切换掉，怎么做

Answer 1

private ImageView image;
private Button btn;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn = (Button) this.findViewById(R.id.btn);
image = (ImageView) this.findViewById(R.id.iv);
btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
image.setBackgroundResource(R.drawable.xx);
}
});

}

Answer 2

ImageView iv= (ImageView)findViewById(R.id.iv);
iv.setImageResource(R.drawable.*xxx);
或者 iv.setImageBitmap(bmp);
或者 iv.setImageURI(URI.PARSE(路径))；

Answer 3

private Button btn;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn = (Button) this.findViewById(R.id.btn);
image = (ImageView) this.findViewById(R.id.iv);
btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
image.setBackgroundResource(R.drawable.xx);
}
});

}