185800****0记录日常生活

Articles posted by: Alan

android开发手势翻页操作的效果

五月 17th, 2016 7.android应用开发
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private void init(Context mContext) {
gestureDetector = new GestureDetector(this,this);
flipper = (ViewFlipper)findViewById(R.id.flipper);

//添加图片
flipper.addView(setImages(R.drawable.a001));
flipper.addView(setImages(R.drawable.a002));
flipper.addView(setImages(R.drawable.a003));
flipper.addView(setImages(R.drawable.a004));
flipper.addView(setImages(R.drawable.a005));

//创建动画
animation[0] = AnimationUtils.loadAnimation(mContext,R.anim.left_in);
animation[1] = AnimationUtils.loadAnimation(mContext,R.anim.left_out);
animation[2] = AnimationUtils.loadAnimation(mContext,R.anim.reghit_in);
animation[3] = AnimationUtils.loadAnimation(mContext,R.anim.reghit_out);

Android开发时钟跟发送消息使用方法

五月 17th, 2016 7.android应用开发
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//首先申明一个句柄
Handler h = null;


//实例化一个句柄
h = new Handler(){
    public void handleMessage(Message msg){
        //这里根据消息类型进行执行代码
    }
};

//申明一个时钟
Timer time = new Timer();

//制定一个任务计划
time.schedule(new TimerTask() {
    @Override
    public void run() {
        h.sendEmptyMessage(0);
    }
}, 1000, 4000);//这里是1秒后执行,每4秒执行一次Run方法中的代码.

Android开发时间操作类

五月 16th, 2016 7.android应用开发
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import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

/**
* 时间操作类
* Created by Alan on 2016/05/16 0016.
*/
public class DateUtility {
public static final String DEFAULT = “yyyy-MM-dd HH:mm:ss”;
public static final String LONG = “yyyy年MM月dd日 HH时mm分ss秒”;
public static final String SHORT = “yyyy-MM-dd HH:mm”;
public static final String DATE = “yyyy-MM-dd”;
public static final String TIME = “HH:mm:ss”;
public static final String FULL = “yyyy-MM-dd HH:mm:ss EEEE”;

public static final String WEEK = “EEEE”;
private static SimpleDateFormat sdf;

Android开发之SQLite(手机记账App)

五月 16th, 2016 7.android应用开发
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MainActivity.class 源码片段

private static final String TAG = “SQLiteLOG”;
private MenuSelect menuSelect;
public int _id;
private Button but_save,but_update,but_delete;
private EditText name,money,remark;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

fab.setVisibility(0);

fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, “Replace with your own action”, Snackbar.LENGTH_LONG)
.setAction(“Action”, null).show();
}
});

name = (EditText)findViewById(R.id.item_name);
money = (EditText)findViewById(R.id.item_money);
remark = (EditText)findViewById(R.id.item_remark);

Bundle bundle = getIntent().getExtras();
if(bundle != null){
_id = Integer.valueOf(bundle.getString(“id”));
name.setText(bundle.getString(“name”));
money.setText(bundle.getString(“money”));
remark.setText(bundle.getString(“remark”));

}
init(this);

}

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