第六课 TextView添加图片 及更改程序图标

1.在资源中插入图片插入 

public class MainActivity extends AppCompatActivity {
    TextView tx;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tx = (TextView)findViewById(R.id.textView2);
        tx.setText("你好呀");
        tx.setTextColor(Color.RED);

        ImageSpan span = new ImageSpan(this, R.mipmap.xiaogou);
        SpannableString spanStr = new SpannableString("我是小狗 ");
        spanStr.setSpan(span, spanStr.length()-1, spanStr.length(), Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
        tx.setText(spanStr);
    }
}