Android利用反射下拉出通知栏

Posted 2022-11-24 胖子爱你520

因为并没有公开的API提供这个功能，所以只能通过反射来调用了，简单demo如下：

import android.content.Context;
import android.os.Build;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import java.lang.reflect.Method;

public class SecondActivity extends AppCompatActivity 

  @Override
  protected void onCreate(Bundle savedInstanceState) 
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_second);
    Button button = findViewById(R.id.open_statusbar);
    button.setOnClickListener(new View.OnClickListener() 
      @Override
      public void onClick(View v) 
        //判断系统版本号
        String methodName = (Build.VERSION.SDK_INT <= 16) ? "expand" : "expandNotificationsPanel";
        doInStatusBar(getApplicationContext(), methodName);
      
    );
  

  @Override
  protected void onResume() 
    super.onResume();
    new Handler().postDelayed(new Runnable() 
      @Override
      public void run() 
        //判断系统版本号
        String methodName = (Build.VERSION.SDK_INT <= 16) ? "collapse" : "collapsePanels";
        doInStatusBar(getApplicationContext(), methodName);
      
    , 10000);
  

  private static void doInStatusBar(Context mContext, String methodName) 
    try 
      Object service = mContext.getSystemService("statusbar");
      Method expand = service.getClass().getMethod(methodName);
      expand.invoke(service);
     catch (Exception e) 
      e.printStackTrace();
    
  

一个简单的按钮添加点击事件，点击后下拉通知栏，从页面加载开始10s后会自动收起通知栏，天天分享小知识，你学会了吗？