package com.example.wtw.learnlayout;
import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;
import com.example.wtw.common.Db;
public class ListViewActivity extends ListActivity {
private SimpleCursorAdapter adapter;
private EditText edName;
//private EditText edSex;
RadioGroup edSex;
private Button add;
private Db db;
private SQLiteDatabase dbRead;
private SQLiteDatabase dbWrite;
//添加按钮事件
private View.OnClickListener addbtn = new View.OnClickListener() {
@Override
public void onClick(View v) {
ContentValues cv = new ContentValues();
if (edName.getText().toString().isEmpty()
//|| edSex.getText().toString().isEmpty()
|| edSex.getCheckedRadioButtonId()==-1
){
Toast.makeText(v.getContext(),"不能为空",Toast.LENGTH_SHORT).show();
}else{
String name = edName.getText().toString();
//String sex = edSex.getText().toString();
RadioButton r = (RadioButton) findViewById(edSex.getCheckedRadioButtonId());
Log.i("mylog","radioID="+edSex.getCheckedRadioButtonId());
String sex = r.getText().toString();
cv.put("name",name);
cv.put("sex",sex);
dbWrite.insert("user",null,cv);
Toast.makeText(v.getContext(),"成功",Toast.LENGTH_SHORT).show();
Log.i("mylog","新增成功");
refreshListView();
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_view);
edName = (EditText) findViewById(R.id.edName);
//edSex = (EditText) findViewById(R.id.edSex);
edSex = (RadioGroup) findViewById(R.id.edSex);
add = (Button) findViewById(R.id.btn_add);
add.setOnClickListener(addbtn);
db = new Db(this);
dbRead = db.getReadableDatabase();
dbWrite = db.getWritableDatabase();
adapter = new SimpleCursorAdapter(this,R.layout.user_list,null,new String[]{"name","sex"},new int[]{R.id.tvName,R.id.tvSex});
Log.i("mylog","正在加载LISTVIEW数据");
setListAdapter(adapter);
refreshListView();
//listview 添加长按事件
getListView().setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView parent, View view, final int position, long id) {
//弹出框,title设置弹出框的标题，message设置弹出框的内容,negative设置取消按钮,positive设置确定按钮及事件
new AlertDialog.Builder(ListViewActivity.this).setTitle("提醒")
.setMessage("您确定删除该项吗?")
.setNegativeButton("取消",null)
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Cursor c = adapter.getCursor();
//c.moveToPosition(position);//从LISTVIEW 中移除
int itemid = c.getInt(c.getColumnIndex("_id"));
Log.i("mylog","删除ID="+itemid);
dbWrite.delete("user","_id=?",new String[]{itemid+""});//在数据库中删除数据
refreshListView();//刷新
}
}).show();
return true;
}
});
}
//刷新
public void refreshListView(){
Cursor c = dbRead.query("user",null,null,null,null,null,null,null);
adapter.changeCursor(c);
}
}
文章标题：androidsqlite增删查demo
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