首先添加如下依赖
compile 'org.xutils:xutils:3.5.0'
在application中初始化
x.Ext.init(this);
1：图片加载模块
public class XUtilsActivity extends AppCompatActivity {
private ImageView imageView;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.xutils);
imageView = (ImageView) findViewById(R.id.image);
final ImageOptions imageOptions = new ImageOptions.Builder()
.setLoadingDrawableId(R.mipmap.ic_launcher)//设置加载中的图片填充图
.setImageScaleType(ImageView.ScaleType.CENTER_CROP)
.setCircular(true)//设置图片为圆形
//ImageOptions.Builder()的一些其他属性：
//.setFadeIn(true); //淡入效果
//.setCircular(true) //设置图片显示为圆形
//.setSquare(true) //设置图片显示为正方形
//setCrop(true).setSize(200,200) //设置大小
//.setAnimation(animation) //设置动画
//.setFailureDrawable(Drawable failureDrawable) //设置加载失败的图片
//.setFailureDrawableId(int failureDrawable) //以资源id设置加载失败的图片
//.setLoadingDrawable(Drawable loadingDrawable) //设置加载中的图片
//.setLoadingDrawableId(int loadingDrawable) //以资源id设置加载中的图片
//.setIgnoreGif(false) //忽略Gif图片
//.setParamsBuilder(ParamsBuilder paramsBuilder) //在网络请求中添加一些参数
//.setRaduis(int raduis) //设置拐角弧度
//.setUseMemCache(true) //设置使用MemCache，默认true
.build();
//第一种加载网络图片的方式:
/*x.image().bind(imageView, "http://c.hiphotos.baidu.com/image/h%3D300/sign=37c0f1fc3501213fd03348dc64e636f8/fc1f4134970a304e9fcf65dfddc8a786c9175c22.jpg"
, imageOptions, new Callback.CommonCallback() {
@Override
public void onSuccess(Drawable result) {
Toast.makeText(XUtilsActivity.this, "加载成功", Toast.LENGTH_SHORT).show();
}
@Override
public void onError(Throwable ex, boolean isOnCallback) {
}
@Override
public void onCancelled(CancelledException cex) {
}
@Override
public void onFinished() {
}
});*/
//第二种加载网络图片的方式:
/* x.image().loadDrawable("http://c.hiphotos.baidu.com/image/h%3D300/sign=37c0f1fc3501213fd03348dc64e636f8/fc1f4134970a304e9fcf65dfddc8a786c9175c22.jpg"
, imageOptions, new Callback.CommonCallback() {
@Override
public void onSuccess(Drawable result) {
imageView.setImageDrawable(result);
Toast.makeText(XUtilsActivity.this, "成功了", Toast.LENGTH_SHORT).show();
}
@Override
public void onError(Throwable ex, boolean isOnCallback) {
}
@Override
public void onCancelled(CancelledException cex) {
}
@Override
public void onFinished() {
}
});*/
//第三种带有缓冲功能的加载网络图片
/* x.image().loadFile("http://c.hiphotos.baidu.com/image/h%3D300/sign=37c0f1fc3501213fd03348dc64e636f8/fc1f4134970a304e9fcf65dfddc8a786c9175c22.jpg", imageOptions, new Callback.CacheCallback() {
@Override
public boolean onCache(File result) {//第二次及以后再加载图片就直接调用这个方法，不调用onSuccess方法了
Log.i("huancun","缓冲成功"+result.getName()+"路径为"+result.getPath());
x.image().bind(imageView,result.getPath(),imageOptions);
//imageView.setImageURI(Uri.parse(result.getPath()));不能用这种写法了，因为这样写的话，imageOptions就没有起到作用，图片是矩形的
return true;
}
@Override
public void onSuccess(File result) {//第一次加载图片会调用这个方法
Log.d("XUtilsActivity", "文件成功:"+"缓冲成功"+result.getName()+"路径为"+result.getPath());
x.image().bind(imageView,result.getPath(),imageOptions);
//imageView.setImageURI(Uri.parse(result.getPath()));不能用这种写法了，因为这样写的话，imageOptions就没有起到作用，图片是矩形的
}
@Override
public void onError(Throwable ex, boolean isOnCallback) {
}
@Override
public void onCancelled(CancelledException cex) {
}
@Override
public void onFinished() {
}
});*/
//加载本地图片
x.image().bind(imageView,"/storage/emulated/0/1.jpg",imageOptions);
}
}
2：数据库模块
public class XUtilsActivity extends AppCompatActivity implements View.OnClickListener {
private Button baocun;
private Button delete;
private Button update;
private Button chaxun;
private DbManager.DaoConfig daoConfig;
private DbManager dbManager;
public void applyPermissions(Context context, String permission) {
if (ContextCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions((Activity) context, new String[]{permission}, 1);
} else {
}
}
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.xutils);
applyPermissions(this, Manifest.permission.WRITE_EXTERNAL_STORAGE);
baocun = (Button) findViewById(R.id.button1);
delete = (Button) findViewById(R.id.button2);
update = (Button) findViewById(R.id.button3);
chaxun = (Button) findViewById(R.id.button4);
baocun.setOnClickListener(this);
chaxun.setOnClickListener(this);
update.setOnClickListener(this);
delete.setOnClickListener(this);
daoConfig = new DbManager.DaoConfig()
.setDbName("shujuku")
.setDbVersion(1)
.setDbDir(new File("/storage/emulated/0"))//设置数据库的保存路径，不设置时, 默认存储在app的私有目录.
.setDbOpenListener(new DbManager.DbOpenListener() {
@Override
public void onDbOpened(DbManager db) {
db.getDatabase().enableWriteAheadLogging();//开启WAL, 对写入加速提升巨大
}
});
dbManager = x.getDb(daoConfig);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1://保存一条数据
CeShi ceshi = new CeShi("laoliang", 24, "我是增加的");
try {
dbManager.save(ceshi);
} catch (DbException e) {
e.printStackTrace();
}
break;
case R.id.button2://删除一条数据
try {
dbManager.delete(CeShi.class, WhereBuilder.b("xingming", "=", "laoliang"));
} catch (DbException e) {
e.printStackTrace();
}
break;
case R.id.button3://修改一条数据
try {
dbManager.update(CeShi.class, WhereBuilder.b("xingming", "=", "laoliang").and("nianling", "=", 24), new KeyValue("zengjia", "修改后的"));
} catch (DbException e) {
e.printStackTrace();
}
break;
case R.id.button4:
CeShi ceShi = null;//获取一条数据
try {
ceShi = dbManager.findById(CeShi.class, "laoliang");
} catch (DbException e) {
e.printStackTrace();
}
if (ceShi != null) {
Toast.makeText(XUtilsActivity.this, ceShi.toString(), Toast.LENGTH_SHORT).show();
}
break;
}
}
/*总结：
//更新
xuesheng a=dbManager.findById(xuesheng.class,2);
a.setXuehao(888);
dbManager.update(a,"xuehao");*//*
List a=dbManager.findAll(xuesheng.class);
for(xuesheng xuesheng:a)
{
dbManager.update(xuesheng.class,WhereBuilder.b("name","=","laoliang"),new KeyValue("xuehao","999"));//这句代码的意思就是更新范围为name=laoliang的所有数据的xuehao的值为999
}
//查找
List list=dbManager.findAll(com.example.liang.shujiaxuexi.xuesheng.class);//得到数据库中xuesheng这个表的所有数据
xuesheng xuesheng2 = dbManager.findById(com.example.liang.shujiaxuexi.xuesheng.class, 2);//得到数据库中xuesheng这个表中id为2的数据
xuesheng xuesheng3=dbManager.findFirst(com.example.liang.shujiaxuexi.xuesheng.class);//得到数据库中xuesheng这个表中的第一条数据
dbManager.selector(com.example.liang.shujiaxuexi.xuesheng.class).where("xuehao",">",150).and("xuehao","<",250).findAll();//得到数据库中xuesheng这个表中满足(150<学号<250)的所有数据
DbModel dbModel=dbManager.findDbModelFirst(new SqlInfo("select * from xuesheng"));//得到数据库中xuesheng这个表中满足sql语句的第一条model，然后调用getString()方法来得到对应的列的值
dbModel.getString("name");
List dbModel1=dbManager.findDbModelAll(new SqlInfo("select * from xuesheng where xuehao > 230"));//得到数据库中xuesheng这个表中满足sql语句的所有的model
dbModel1.get(2).getString("name");
//删除
dbManager.deleteById(xuesheng.class,2);//删除数据库中xuesheng表中id为2的数据
dbManager.delete(xuesheng.class, WhereBuilder.b("name","=","laoliang"));//删除数据库中xuesheng表中name=laoliang的所有数据
dbManager.delete(dbManager.findFirst(xuesheng.class));//删除数据库中xuesheng表中的第一条数据
dbManager.delete(xuesheng.class);//删除数据库中xuesheng表中的所有数据，但是表还在
dbManager.dropTable(xuesheng.class);//删除xuesheng这个表
dbManager.dropDb();//删除数据库中的所有表，但是数据库还是存在的*/
}
5：线程模块
public class XUtilsActivity extends AppCompatActivity implements View.OnClickListener {
private Button baocun;
private Button delete;
private Button update;
private Button chaxun;
public void applyPermissions(Context context, String permission) {
if (ContextCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions((Activity) context, new String[]{permission}, 1);
} else {
}
}
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.xutils);
applyPermissions(this, Manifest.permission.WRITE_EXTERNAL_STORAGE);
baocun = (Button) findViewById(R.id.button1);
delete = (Button) findViewById(R.id.button2);
update = (Button) findViewById(R.id.button3);
chaxun = (Button) findViewById(R.id.button4);
baocun.setOnClickListener(this);
chaxun.setOnClickListener(this);
update.setOnClickListener(this);
delete.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
x.task().run(new Runnable() {
@Override
public void run() {
Log.d("XUtilsActivity", "1:"+Thread.currentThread().getName());
}
});
break;
case R.id.button2:
x.task().post(new Runnable() {
@Override
public void run() {
Log.d("XUtilsActivity", "2:"+Thread.currentThread().getName());
}
});
break;
case R.id.button3:
x.task().start(new AbsTask