android studio的logcat不能显示自己需要打印的信息怎么办啊

Question

package com.example.ff.myapplication; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.view.ViewTreeObserver; import android.widget.AbsListView; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.SimpleAdapter; import android.widget.Toast; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; public class TextView extends Activity implements AdapterView.OnItemClickListener,ViewTreeObserver.OnScrollChangedListener, AbsListView.OnScrollListener {     private ListView listView;     private SimpleAdapter Sim_adapter;     private List<Map<String,Object>> datalist;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.textview);         listView= (ListView) findViewById(R.id.listView);         datalist=new ArrayList<Map<String, Object>>();                 Sim_adapter=new SimpleAdapter(this,getData(),R.layout.item,new String[]{"pic","text"},new int[]{R.id.pic,R.id.text_list});         listView.setAdapter(Sim_adapter);         listView.setOnItemClickListener(this);         listView.setOnScrollListener(this);     }     private List<Map<String,Object>> getData(){         for (int i=0;i<20;i++){             Map<String, Object>map=new HashMap<String,Object>();             map.put("pic",R.mipmap.ic_launcher);             map.put("text","慕课网"+i);             datalist.add(map);         }         return datalist;     }     @Override     public void onItemClick(AdapterView<?> parent, View view, int position, long id) {         String text=listView.getItemAtPosition(position)+"";         Toast.makeText(this,"postion="+position+" text="+text,Toast.LENGTH_LONG).show();     }     @Override     public void onScrollChanged() {     }     @Override     public void onScrollStateChanged(AbsListView view, int scrollState) {         switch (scrollState){             case SCROLL_STATE_FLING:                 Log.i("main", "用户在手指离开屏幕之前，用力划一下，视图仍依靠惯性继续滑动");                 break;             case SCROLL_STATE_IDLE:                 Log.i("main","视图已经停止滑动");                 break;             case SCROLL_STATE_TOUCH_SCROLL:                 Log.i("main", "手指没有离开屏幕，视图正在滑动");         }     }     @Override     public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {     } }

Answer 1

第一个下拉列表，可以过滤等级。第二个，输入框，就填入你的TAG，同时支持正则表达式。

Answer 2

过滤一下，添加一个规则