Android_ButterKnife入门

一:ButterKnife一个注解框架,可以减少代码的复用

1:导入依赖包

compile 'com.jakewharton:butterknife:8.8.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'

2:获取id,设置点击事件

public class MainActivity extends AppCompatActivity {

    @BindView(R.id.tv_show) TextView tv_show;
    @BindView(R.id.btn_settv) Button btn_settv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
	//不要忘记
        ButterKnife.bind(this);
    }

    @OnClick({R.id.btn_settv,R.id.btn_settv2})
    public void setTv(View v){
        switch (v.getId()){
            case R.id.btn_settv:
                tv_show.setText("点击了一下");
                break;
            case R.id.btn_settv2:
                tv_show.setText("又点击了一下");
                break;
        }
    }
}