"Android Programming Definitive Guide (Third Edition)" Chapter 15 Challenge Exercise Demo

"Android Programming Definitive Guide (Third Edition)" Chapter 15 Challenge Exercise Demo

The first question, use IntentBuilder to create Intent, the key code:

mReportButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                /**
                Intent i = new Intent(Intent.ACTION_SEND);
                i.setType("text/plan");
                i.putExtra(Intent.EXTRA_TEXT, getCrimeReport());
                i.putExtra(Intent.EXTRA_SUBJECT, getString(R.string.crime_report_subject));
                i = Intent.createChooser(i, getString(R.string.send_report));
                 */
                ShareCompat.IntentBuilder i = ShareCompat.IntentBuilder.from(getActivity())
                        .setType("text/plan")
                        .setText(getCrimeReport())
                        .setSubject(getString(R.string.crime_report_subject))
                        .setSubject(getString(R.string.send_report));
                i.createChooserIntent();
                i.startChooser();
            }
        });

The second question, add a contact number:

First add a phone number variable to the Crime class:

public class Crime {

    private UUID mId;
    private String mTitle;
    private Date mDate;
    private boolean mSolved;
    private String mSuspect;
    private String mPhone;

    public Crime() {
        this(UUID.randomUUID());
    }

    public Crime(UUID id) {
        mId = id;
        mDate = new Date();
    }

    public UUID getId() {
        return mId;
    }

    public String getTitle() {
        return mTitle;
    }

    public Date getDate() {
        return mDate;
    }

    public boolean isSolved () {
        return mSolved;
    }

    public void setTitle(String title) {
        mTitle = title;
    }

    public void setDate(Date date) {
        mDate = date;
    }

    public void setSolved(boolean solved) {
        mSolved = solved;
    }

    public String getSuspect() {
        return mSuspect;
    }

    public void setSuspect(String suspect) {
        mSuspect = suspect;
    }

    public String getPhone() {
        return mPhone;
    }

    public void setPhone(String phone) {
        this.mPhone = phone;
    }
}

Add another column to the database:

public class CrimeDbSchema {

    public static final class CrimeTable {

        public static final String NAME = "crimes";

        public static final class Cols {
            public static final String UUID = "uuid";
            public static final String TITLE = "title";
            public static final String DATE = "date";
            public static final String SOLVED = "solved";
            public static final String SUSPECT = "suspect";
            public static final String PHONE = "phone";
        }

    }

}

Change CrimeCursorWrapper and CrimeBaseHelper:

public class CrimeCursorWrapper extends CursorWrapper {

    public CrimeCursorWrapper(Cursor cursor) {
        super(cursor);
    }

    public Crime getCrime() {
        String uuidString = getString(getColumnIndex(CrimeTable.Cols.UUID));
        String title = getString(getColumnIndex(CrimeTable.Cols.TITLE));
        long date = getLong(getColumnIndex(CrimeTable.Cols.DATE));
        int isSolved = getInt (getColumnIndex (CrimeTable.Cols.SOLVED));
        String suspect = getString(getColumnIndex(CrimeTable.Cols.SUSPECT));
        String phone = getString(getColumnIndex(CrimeTable.Cols.PHONE));

        Crime crime = new Crime(UUID.fromString(uuidString));
        crime.setTitle(title);
        crime.setDate(new Date(date));
        crime.setSolved (isSolved! = 0);
        crime.setSuspect(suspect);
        crime.setPhone(phone);

        return crime;
    }

}

public void onCreate(SQLiteDatabase db) {
        db.execSQL("create table " + CrimeTable.NAME + "(" +
                "_id integer primary key autoincrement, " +
                CrimeTable.Cols.UUID + ", "+
                CrimeTable.Cols.TITLE + ", " +
                CrimeTable.Cols.DATE + ", " +
                CrimeTable.Cols.SOLVED + ", " +
                CrimeTable.Cols.SUSPECT + ", " +
                CrimeTable.Cols.PHONE +
                ")"
        );
    }

Finally change onActivityResult() in CrimeFragment:

public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode != Activity.RESULT_OK) {
            return;
        }
        if (requestCode == REQUEST_DATE) {
            Date date = (Date) data.getSerializableExtra(DatePickerFragment.EXTRA_DATE);
            mCrime.setDate(date);
            updateDate();
        } else if (requestCode == REQUEST_CONTACT && data != null) {
            Uri contactUri = data.getData();
            String[] queryFields = new String[] {
                    ContactsContract.Contacts.DISPLAY_NAME, ContactsContract.Contacts._ID
            };
            Cursor c = getActivity().getContentResolver().query(contactUri, queryFields,
                    null, null, null);
            try {
                if (c.getCount() == 0) {
                    return;
                }
                c.moveToFirst();
                String suspect = c.getString(0);
                String memId = c.getString(1);
                Cursor phone = getActivity().getContentResolver().query(
                        ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                        null,
                        ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + memId,
                        null,
                        null);
                if (phone.moveToNext()) {
                    //Remove the contact phone number.
                    String mPhoneNumber = phone.getString(
                            phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                    //Set the phone number to the current Crime object
                    mCrime.setPhone(mPhoneNumber);
                }
                mCrime.setSuspect(suspect);
                mSuspectButton.setText(suspect);
            } finally {
                c.close();
            }
        }
    }

In the second question, I saw some other big guys' documents when I checked the documentation, and found that they wrote more detailed ones. I put the link below:

（1）https://www.cnblogs.com/android-for-dh/p/4449524.html

2 http://www.bubuko.com/infodetail-2173183.html

Finally, the source code of this question is attached: Demo

If there are any deficiencies, please advise :)