1.Serializable

特点，方便简单

public class CommonListResult implements Serializable{

    private static final long serialVersionUID = 1L;    private String aString;    private String bString;    private String cString;    private ArrayList<String> dStrings;    private ArrayList<CommonListResultStep> eArrayList;    public String getaString() {         return aString;    }    public void setaString(String aString) {         this.aString = aString;    }    public String getbString() {         return bString;    }    public void setbString(String bString) {         this.bString = bString;    }    public String getcString() {         return cString;    }    public void setcString(String cString) {         this.cString = cString;    }    public ArrayList<String> getdStrings() {         return dStrings;    }    public void setdStrings(ArrayList<String> dStrings) {         this.dStrings = dStrings;    }    public ArrayList<CommonListResultStep> geteArrayList() {         return eArrayList;    }    public void seteArrayList(ArrayList<CommonListResultStep> eArrayList) {         this.eArrayList = eArrayList;    }

public class CommonListResultStep implements Serializable {

    private static final long serialVersionUID = 2L;    private String step1;    private String step2;    public String getStep1() {         return step1;    }    public void setStep1(String step1) {         this.step1 = step1;    }    public String getStep2() {         return step2;    }    public void setStep2(String step2) {         this.step2 = step2;    }}

MainActivity----->SerializableActivity

private void sendSeriabletoActivity() {

        CommonListResult commonListResult = new CommonListResult();        commonListResult.setaString("a");        commonListResult.setbString("b");        commonListResult.setcString("c");        ArrayList<String> cArrayList = new ArrayList<String>();        cArrayList.add("d1");        cArrayList.add("d2");        commonListResult.setdStrings(cArrayList);        ArrayList<CommonListResultStep> steps = new ArrayList<CommonListResultStep>();        CommonListResultStep commonListResultStep = new CommonListResultStep();        commonListResultStep.setStep1("step1.1");        commonListResultStep.setStep2("step1.2");        CommonListResultStep commonListResultStep2 = new CommonListResultStep();        commonListResultStep2.setStep1("step2.1");        commonListResultStep2.setStep2("step2.2");        steps.add(commonListResultStep);        steps.add(commonListResultStep2);        commonListResult.seteArrayList(steps);        Intent intent = new Intent(MainActivity.this, SerializableActivity.class);        intent.putExtra("commonlist_result", commonListResult);        startActivity(intent);    }

public class SerializableActivity extends ActionBarActivity {

    @Override    protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);        setContentView(R.layout.activity_serializable);        Intent intent = getIntent();        CommonListResult result = (CommonListResult) intent                .getSerializableExtra("commonlist_result");        if (result != null) {             ArrayList<String> strings = result.getdStrings();            Log.e("SerializableActivity", "strings :" + strings);            ArrayList<CommonListResultStep> steps = result.geteArrayList();            Log.e("SerializableActivity", "step String :" + steps.get(0).getStep1()                    + steps.get(0).getStep2() + "\nsetp2 :" + steps.get(1).getStep1()                    + steps.get(1).getStep2());        }    }

2.Parcelable

特点，稍微复杂，但是内存效率高

public class CommonListResultParcelble implements Parcelable {

    private String aString;    private String bString;    private String cString;    private ArrayList<String> dStrings;    private ArrayList<CommonListResultStepParcelble> eArrayList;    public CommonListResultParcelble () {         dStrings = new ArrayList<String>();        eArrayList = new ArrayList<CommonListResultStepParcelble>();    }        public CommonListResultParcelble(Parcel in) {         this();        readParcel(in);    }    public String getaString() {         return aString;    }    public void setaString(String aString) {         this.aString = aString;    }    public String getbString() {         return bString;    }    public void setbString(String bString) {         this.bString = bString;    }    public String getcString() {         return cString;    }    public void setcString(String cString) {         this.cString = cString;    }    public ArrayList<String> getdStrings() {         return dStrings;    }    public void setdStrings(ArrayList<String> dStrings) {         this.dStrings = dStrings;    }    public ArrayList<CommonListResultStepParcelble> geteArrayList() {         return eArrayList;    }    public void seteArrayList(ArrayList<CommonListResultStepParcelble> eArrayList) {         this.eArrayList = eArrayList;    }    private void readParcel(Parcel in) {         this.aString = in.readString();        this.bString = in.readString();        this.cString = in.readString();        in.readStringList(dStrings);        in.readList(eArrayList, CommonListResultStepParcelble.class.getClassLoader());    }    @Override    public int describeContents() {         return 0;    }    @Override    public void writeToParcel(Parcel dest, int flags) {         dest.writeString(aString);        dest.writeString(bString);        dest.writeString(cString);        dest.writeStringList(dStrings);        dest.writeList(eArrayList);    }    public static final Parcelable.Creator<CommonListResultParcelble> CREATOR = new Creator<CommonListResultParcelble>() {         @Override        public CommonListResultParcelble createFromParcel(Parcel source) {             return new CommonListResultParcelble(source);        }        @Override        public CommonListResultParcelble[] newArray(int size) {             return new CommonListResultParcelble[size];        }    };}

public class CommonListResultStepParcelble implements Parcelable {

    private String step1;    private String step2;    public String getStep1() {         return step1;    }    public void setStep1(String step1) {         this.step1 = step1;    }    public String getStep2() {         return step2;    }    public void setStep2(String step2) {         this.step2 = step2;    }    @Override    public int describeContents() {         return 0;    }    @Override    public void writeToParcel(Parcel dest, int flags) {         dest.writeString(step1);        dest.writeString(step2);    }    public static final Parcelable.Creator<CommonListResultStepParcelble> CREATOR = new Creator<CommonListResultStepParcelble>() {         @Override        public CommonListResultStepParcelble createFromParcel(Parcel source) {             CommonListResultStepParcelble commonListResultStepParcelble = new CommonListResultStepParcelble();            commonListResultStepParcelble.step1 = source.readString();            commonListResultStepParcelble.step2 = source.readString();            return commonListResultStepParcelble;        }        @Override        public CommonListResultStepParcelble[] newArray(int size) {             return new CommonListResultStepParcelble[size];        }    };}

MainActivity---->ParcebleActivity

private void sendParceltoActivity() {

        CommonListResultParcelble commonListResult = new CommonListResultParcelble();        commonListResult.setaString("a");        commonListResult.setbString("b");        commonListResult.setcString("c");        ArrayList<String> cArrayList = new ArrayList<String>();        cArrayList.add("d1");        cArrayList.add("d2");        commonListResult.setdStrings(cArrayList);        ArrayList<CommonListResultStepParcelble> steps = new ArrayList<CommonListResultStepParcelble>();        CommonListResultStepParcelble commonListResultStep = new CommonListResultStepParcelble();        commonListResultStep.setStep1("step3.1");        commonListResultStep.setStep2("step3.2");        steps.add(commonListResultStep);        CommonListResultStepParcelble commonListResultStep2 = new CommonListResultStepParcelble();        commonListResultStep2.setStep1("step4.1");        commonListResultStep2.setStep2("step4.2");        steps.add(commonListResultStep2);        commonListResult.seteArrayList(steps);        Log.e("insert size", "size :" + commonListResult.geteArrayList().size());        Intent intent = new Intent(MainActivity.this, ParcebleActivity.class);        intent.putExtra(KEY_PARCLE, commonListResult);        startActivity(intent);    }

public class ParcebleActivity extends ActionBarActivity {

    private CommonListResultParcelble commonListResultParcelble;    @Override    protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);        setContentView(R.layout.activity_parceble);        commonListResultParcelble = (CommonListResultParcelble) getIntent().getParcelableExtra(                MainActivity.KEY_PARCLE);        Log.e("@@@@@@@@@@@@@@@@@@@", "is null :" + (null == commonListResultParcelble));        if (null != commonListResultParcelble) {             Log.e("ParcebleActivity", commonListResultParcelble.getaString()                    + "\n ArrayList<String> :" + commonListResultParcelble.getdStrings().toString()                    + "\n ArrayList<Object>:"                    + commonListResultParcelble.geteArrayList().get(0).getStep1());            int size = commonListResultParcelble.geteArrayList().size();            Log.e("size", "size :" + size);            for (int i=0;i<size ; i++) {                 CommonListResultStepParcelble stepParcelble = commonListResultParcelble.geteArrayList().get(i);                Log.e("Step", "1 :" + stepParcelble.getStep1() + "  2:" + stepParcelble.getStep2());            }        }    }