Android学习-第35天
今天的任务为布置照片，代码如下：
fragment_crime.xml:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_margin="16dp" android:layout_height="match_parent"> <LinearLayout android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="16dp" android:layout_marginTop="16dp"> <LinearLayout android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content"> <ImageView android:id="@+id/crime_photo" android:layout_width="80dp" android:layout_height="80dp" android:scaleType="centerInside" android:cropToPadding="true" android:background="@android:color/darker_gray"/> <ImageButton android:id="@+id/crime_camera" android:layout_width="match_parent" android:layout_height="wrap_content" android:src="@android:drawable/ic_menu_camera"/> </LinearLayout> <LinearLayout android:orientation="vertical" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1"> <TextView style="?android:listSeparatorTextViewStyle" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/crime_title_label"/> <EditText android:id="@+id/crime_title" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="@string/crime_title_hint"/> </LinearLayout> </LinearLayout> <TextView style="?android:listSeparatorTextViewStyle" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/crime_details_label"/> <Button android:id="@+id/crime_date" android:layout_width="match_parent" android:layout_height="wrap_content" /> <CheckBox android:id="@+id/crime_solved" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/crime_solved_label"/> <Button android:id="@+id/crime_suspect" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/crime_suspect_text"/> <Button android:id="@+id/crime_report" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/crime_report_text"/> </LinearLayout>
CrimeFragment.java:
package com.bignerdranch.android.criminallntent; import android.content.Intent; import android.content.pm.PackageManager; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.provider.ContactsContract; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.text.Editable; import android.text.TextWatcher; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; import android.widget.DatePicker; import android.widget.EditText; import android.text.format.DateFormat; import android.widget.ImageButton; import android.widget.ImageView; import java.util.Date; import java.util.UUID; import static android.support.v4.provider.FontsContractCompat.FontRequestCallback.RESULT_OK; public class CrimeFragment extends Fragment{ private static final String ARG_CRIME_ID="crime_id"; private static final String DIALOG_DATE="DialogDate"; private static final int REQUEST_DATE=0; private static final int REQUEST_CONTACT=1; private Crime mCrime; private EditText mTitleField; private Button mDateButton; private CheckBox mSolvedCheckBox; private Button mSuspectButton; private Button mReportButton; private ImageButton mPhotoButton; private ImageView mPhotoView; public static CrimeFragment newInstance(UUID crimeId){ Bundle args=new Bundle(); args.putSerializable(ARG_CRIME_ID,crimeId); CrimeFragment fragment=new CrimeFragment(); fragment.setArguments(args); return fragment; } @Override public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); UUID crimeId=(UUID)getArguments().getSerializable(ARG_CRIME_ID); //mCrime=new Crime(); //UUID crimeId=(UUID) getActivity().getIntent().getSerializableExtra(CrimeActivity.EXTRA_CRIME_ID); mCrime=CrimeLab.get(getActivity()).getCrime(crimeId); } @Override public void onPause(){ super.onPause(); CrimeLab.get(getActivity()) .updateCrime(mCrime); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState){ View v=inflater.inflate(R.layout.fragment_crime,container,false); mTitleField=(EditText)v.findViewById(R.id.crime_title); mTitleField.setText(mCrime.getTitle()); mTitleField.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { //This space intentionally left bank } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { mCrime.setTitle(s.toString()); } @Override public void afterTextChanged(Editable s) { //This one too } }); mDateButton=(Button)v.findViewById(R.id.crime_date); updateDate(); //mDateButton.setText(mCrime.getDate().toString()); //mDateButton.setEnabled(false); mDateButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { FragmentManager manager=getFragmentManager(); //DatePickerFragment dialog=new DatePickerFragment(); DatePickerFragment dialog=DatePickerFragment.newInstance(mCrime.getDate()); dialog.setTargetFragment(CrimeFragment.this,REQUEST_DATE); dialog.show(manager,DIALOG_DATE); } }); mSolvedCheckBox=(CheckBox)v.findViewById(R.id.crime_solved); mSolvedCheckBox.setChecked(mCrime.isSolved()); mSolvedCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { mCrime.setSolved(isChecked); } }); mReportButton=(Button)v.findViewById(R.id.crime_report); mReportButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Intent i= new Intent(Intent.ACTION_SEND); i.setType("text/plain"); 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)); startActivity(i); } }); final Intent pickContact=new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI); //pickContact.addCategory(Intent.CATEGORY_HOME); mSuspectButton=(Button)v.findViewById(R.id.crime_suspect); mSuspectButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { startActivityForResult(pickContact,REQUEST_CONTACT); } }); if(mCrime.getSuspect()!=null){ mSuspectButton.setText(mCrime.getSuspect()); } PackageManager packageManager=getActivity().getPackageManager(); if (packageManager.resolveActivity(pickContact, PackageManager.MATCH_DEFAULT_ONLY)==null){ mSuspectButton.setEnabled(false); } mPhotoButton=(ImageButton)v.findViewById(R.id.crime_camera); mPhotoView=(ImageView)v.findViewById(R.id.crime_photo); return v; } private void updateDate() { mDateButton.setText(mCrime.getDate().toString()); } private String getCrimeReport(){ String solvedString=null; if(mCrime.isSolved()){ solvedString=getString(R.string.crime_report_solved); }else { solvedString=getString(R.string.crime_report_unsolved); } String dateFormat="EEE, MMM dd"; String dateString = DateFormat.format(dateFormat,mCrime.getDate()).toString(); String suspect=mCrime.getSuspect(); if(suspect==null){ suspect=getString(R.string.crime_report_no_suspect); }else { suspect=getString(R.string.crime_report_suspect,suspect); } String report=getString(R.string.crime_report, mCrime.getTitle(),dateString,solvedString,suspect); return report; } @Override public void onActivityResult(int requestCode,int resultCode,Intent data){ if(resultCode!=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 }; Cursor c=getActivity().getContentResolver() .query(contactUri,queryFields,null,null,null); try{ if (c.getCount()==0){ return; } c.moveToFirst(); String suspect=c.getString(0); mCrime.setSuspect(suspect); mSuspectButton.setText(suspect); } finally { c.close(); } } } }
截图如下：