1.SharedPrefereces 轻量级.XML 存储文件名，数据保存在data/data/basepackage/shared_prefs/myopt.xml中 实例-收藏-记住密码自动登录

//一种轻量级的数据存储方式//通过KEY

存入数据——putxxxx(key，value)

取出数据——getxxxx(key default)

2.读写SD卡 SD的根目录 适用于数据流读写

3.SQLite 轻量级.dp文件多用于手机里

4.Content prowvider内容提供者

网路存储 在网络后台存储

package com.example.jreduch08;

import android.content.Intent;

import android.content.SharedPreferences;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.EditText;

public class SharePreferencesActivity extends AppCompatActivity {

private CheckBox cb1;

private CheckBox cb2;

private SharedPreferences sp;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

cb1= (CheckBox) findViewById(R.id.checkBox1);

cb2= (CheckBox) findViewById(R.id.checkBox2);

Button save2= (Button) findViewById(R.id.save2);

final EditText user= (EditText) findViewById(R.id.user);

final EditText pwd= (EditText) findViewById(R.id.pwd);

Button save= (Button) findViewById(R.id.save);

sp=getSharedPreferences("userInfo",MODE_PRIVATE);

save.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

SharedPreferences.Editor editor=sp.edit();

editor.putString("userName",user.getText().toString());

editor.putInt("userPwd",Integer.parseInt(pwd.getText().toString()));

editor.commit();

Intent intent=new Intent(SharePreferencesActivity.this,Sp2Activity.class);

startActivity(intent);

}

});

save2.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

SharedPreferences.Editor editor=sp.edit();

// editor.putString("userName",user.getText().toString());

// editor.putInt("userPwd",Integer.parseInt(pwd.getText().toString()));

editor.putBoolean("jzmm",cb1.isChecked());

editor.putBoolean("zddl",cb2.isChecked());

editor.commit();

Intent intent=new Intent(SharePreferencesActivity.this,SettingsActivity.class);

startActivity(intent);

}

});

}

@Override

protected void onStart() {

super.onStart();

sp=getSharedPreferences("userInfo",MODE_PRIVATE);

Boolean jzmm=sp.getBoolean("jzmm",false);

Boolean zddl=sp.getBoolean("zddl",false);

cb1.setChecked(jzmm);

cb2.setChecked(zddl);

}

}

package com.example.jreduch08;

import android.content.Intent;

import android.content.SharedPreferences;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Switch;

public class SettingsActivity extends AppCompatActivity {

private Switch switch1;

private Switch switch2;

private SharedPreferences sp;

private Button button;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_settings);

switch1= (Switch) findViewById(R.id. switch1);

switch2= (Switch) findViewById(R.id. switch2);

button= (Button) findViewById(R.id.button);

sp=getSharedPreferences("userInfo",MODE_PRIVATE);

button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

SharedPreferences.Editor editor=sp.edit();

editor.putBoolean("jzmm",switch1.isChecked());

editor.putBoolean("zddl",switch2.isChecked());

editor.commit();

Intent intent=new Intent(SettingsActivity.this,SharePreferencesActivity.class);

startActivity(intent);

}

});

}

@Override

protected void onStart() {

super.onStart();

sp=getSharedPreferences("userInfo",MODE_PRIVATE);

Boolean jzmm=sp.getBoolean("jzmm",false);

Boolean zddl=sp.getBoolean("zddl",false);

switch1.setChecked(jzmm);

switch2.setChecked(zddl);

}

}

package com.example.jreduch08;

import android.content.SharedPreferences;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

public class Sp2Activity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_sp2);

Button getUser= (Button) findViewById(R.id.getUser);

final TextView showUser= (TextView) findViewById(R.id.showUser);

final SharedPreferences sp=getSharedPreferences("userInfo",MODE_PRIVATE);

getUser.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

String name=sp.getString("userName","Admin");

String pwd=String.valueOf(sp.getInt("userPwd",88888));

showUser.setText("用户名"+name+"n"+"密码"+pwd);

}

});

}

}

//图片轮播的控件

//图片自动缩放的控件

compile 'com.android.support:appcompat-v7:24.0.0'

compile 'com.jude:rollviewpager:1.3.4'

compile 'com.flaviofaria:kenburnsview:1.0.7'

compile 'com.android.support:design:24.0.0'

package com.example.jreduch08;

import android.graphics.Color;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ImageView;

import com.flaviofaria.kenburnsview.KenBurnsView;

import com.jude.rollviewpager.OnItemClickListener;

import com.jude.rollviewpager.RollPagerView;

import com.jude.rollviewpager.adapter.StaticPagerAdapter;

import com.jude.rollviewpager.hintview.ColorPointHintView;

public class ZyfActivity extends AppCompatActivity {

private RollPagerView rollPagerView;

private KenBurnsView kenBurnsView;

//图片数组

private int[]imgs={

R.mipmap.a,

R.mipmap.b,

R.mipmap.c,

R.mipmap.d,

};

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_zyf);

rollPagerView= (RollPagerView) findViewById(R.id.roll_view_pager);

kenBurnsView= (KenBurnsView) findViewById(R.id.image);

//设置播放时间间隔

rollPagerView.setPlayDelay(3000);

//设置透明度

rollPagerView.setAnimationDurtion(500);

//设置适配器

rollPagerView.setAdapter(new TestNormalAdapter(imgs));

//自定义指示器图片

// rollPagerView.setHintView(new IconHintView(this,R.mipmap.e,R.mipmap.d));

//设置圆点指示器颜色

rollPagerView.setHintView(new ColorPointHintView(this, Color.YELLOW,Color.WHITE));

//文字指示器

// rollPagerView.setHintView(new TextHintView(this));

//隐藏指示器

// rollPagerView.setHintView(null);

rollPagerView.setOnItemClickListener(new OnItemClickListener() {

@Override

public void onItemClick(int position) {

kenBurnsView.setImageResource(imgs[position]);

}

});

}

private class TestNormalAdapter extends StaticPagerAdapter{

private int []imgs;

public TestNormalAdapter(int[] imgs){

this.imgs=imgs;

}

@Override

public View getView(ViewGroup container, int position) {

ImageView view=new ImageView(container.getContext());

view.setImageResource(imgs[position]);

view.setScaleType(ImageView.ScaleType.CENTER_CROP);

view.setLayoutParams(new ViewGroup.LayoutParams(

ViewGroup.LayoutParams.MATCH_PARENT,

ViewGroup.LayoutParams.MATCH_PARENT));

return view;

}

@Override

public int getCount() {

return imgs.length;

}

}

}

//加载网络图片

compile 'com.github.bumptech.glide:glide:3.7.0'

package com.example.jreduch08;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.Button;

import android.widget.ImageView;

import com.bumptech.glide.Glide;

import com.bumptech.glide.load.engine.DiskCacheStrategy;

public class GlideActivity extends AppCompatActivity {

private ImageView img;

private Button bt1;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_glide);

img = (ImageView) findViewById(R.id.img);

bt1 = (Button) findViewById(R.id.bt1);

bt1.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Glide.with(GlideActivity.this)

.load("https://img02.sogoucdn.com/net/a/04/link?url=http%3A%2F%2Fi04" +

".pictn.sogoucdn.com%2F59700dc8568d7ff3&appid=122")

.asGif()

.diskCacheStrategy(DiskCacheStrategy.ALL)

.error(R.mipmap.ic_launcher)

.into(img);

}

});

}

}