随手撸个发出来:
V:界面层
//界面层需要实现P.View方法,然后重写P.View中的方法;M层给的数据就在这些个方法的参数中;
// 还要获取到P.Provide的实例,使用P.Provide去调用M层的方法;
public class ActivityDemo extends AppCompatActivity implements DemoP.View {
private DemoP.Provide provide;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_demo);
new DemoM(this);
provide.start();
}
@Override
public void showMessage(String msg) {
Log.i("mvp", "showMessage: "+msg);
}
@Override
public void Provide(DemoP.Provide m) {
provide = m;
}
}
P:连接层
public interface DemoP {
//提供界面
interface View{
void showMessage(String msg);
void Provide(DemoP.Provide m);
}
//提供信息
interface Provide{
void start();
}
}
M:数据层
// 数据层需要实现P.Provide,然后重写P.Provide;V层就要调用你的这些方法;
// 还要获取到P.View的实例,使用P.View把你处理好的数据返回给V层;
public class DemoM implements DemoP.Provide{
private DemoP.View view;
public DemoM(DemoP.View v){
view = v;
view.Provide(this);
}
@Override
public void start() {
StringBuffer ss = new StringBuffer();
for (int i = 0; i < 10; i++) {
ss.append("\n--"+i);
}
view.showMessage(ss.toString());
}
}
如果刚接触MVP看着有疑惑,就照着撸一遍,大致就能懂了;
还可以看看封装一下的:MVP案例