为什么安卓数据库查询不了，要么闪退，要么查询不到，数据库数据正常，语句改了很多次，照着网络抄都不行

@Override
public void onClick(View view) {
String str1="";
EditText editText1=(EditText)findViewById(R.id.zyss);
str1=editText1.getText().toString();

            TextView textView = (TextView)findViewById(R.id.TextView1);//
            //String path=Environment.getExternalStorageDirectory()+"/sj.db";

            //textView.setText(MainActivity2.this.getDatabasePath("mydata.db").getPath());//getDatabasePath("myadata.db").getPath()

            //dbsj=SQLiteDatabase.openOrCreateDatabase(getDatabasePath("myadata.db").getPath(),null);//MainActivity2.this.getDatabasePath("mydata.db").getPath()
            dbsj=myOpenHeleper.getWritableDatabase();
            textView.setText("");
            Cursor chazhao=dbsj.rawQuery("select * from zy where YFYL",new String[]{"like%"+str1+"%"});// like '%"+str1+"%'"
            if (chazhao!=null&&chazhao.getCount()>0){
                while(chazhao.moveToNext()){
                    String YM= chazhao.getString(1);
                    String YX= chazhao.getString(2);
                    String GJ= chazhao.getString(3);
                    String GX= chazhao.getString(4);
                    String YY= chazhao.getString(5);
                    String YFYL= chazhao.getString(6);
                    String ZY=chazhao.getString(7);
                    //System.out.print(YX);
                    textView.append(YM);
                }

            }
            dbsj.close();
            chazhao.close();

//第二种方法也改了很多次，照抄也是不行，前面到数据库路径那部分都是对的
SQLiteDatabase db=myOpenHeleper.getReadableDatabase();
                Cursor cursor = db.query("zy",new String[]{"YM"},"YM=?",new String[]{"麻黄"},null,null,null);
                while (cursor.moveToNext()){
                    String YM = cursor.getString(cursor.getColumnIndex("YM"));
                    String YX = cursor.getString(cursor.getColumnIndex("YX"));
                    String GJ = cursor.getString(cursor.getColumnIndex("GJ"));
                    String GX = cursor.getString(cursor.getColumnIndex("GX"));
                    String YY = cursor.getString(cursor.getColumnIndex("YY"));
                    String YFYL = cursor.getString(cursor.getColumnIndex("YFYL"));
                    String ZY = cursor.getString(cursor.getColumnIndex("ZY"));
                    Log.d("1055",YM+YX);
                    textView.setText(YX);

                }

有没有异常日志，主要看日志来分析问题。