diff --git a/app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903127/Net1314080903127_DiaryEditActivity.java b/app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903127/Net1314080903127_DiaryEditActivity.java new file mode 100644 index 00000000..005b6ff7 --- /dev/null +++ b/app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903127/Net1314080903127_DiaryEditActivity.java @@ -0,0 +1,65 @@ + + +package edu.hzuapps.androidworks.homeworks.net1314080903127; + +import com.donglihan.CollegeLifeManager.R; + +import android.app.Activity; +import android.content.Intent; +import android.os.Bundle; +import android.view.View; +import android.widget.Button; +import android.widget.EditText; + +public class Net1314080903127_DiaryEditActivity extends Activity { + + private EditText mTitleText; + private EditText mBodyText; + private Long mRowId; + private Net1314080903127_DbAdapter mDbHelper; + + @Override + protected void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + mDbHelper = new Net1314080903127_DbAdapter(this); + setContentView(R.layout.net1314080903127_diary_edit); + + mTitleText = (EditText) findViewById(R.id.title); + mBodyText = (EditText) findViewById(R.id.body); + + Button confirmButton = (Button) findViewById(R.id.confirm); + + mRowId = null; + Bundle extras = getIntent().getExtras(); + //判断是否为编辑状态 + if (extras != null) { + String title = extras.getString(Net1314080903127_DbAdapter.KEY_TITLE); + String body = extras.getString(Net1314080903127_DbAdapter.KEY_BODY); + mRowId = extras.getLong(Net1314080903127_DbAdapter.KEY_ROWID); + + if (title != null) { + mTitleText.setText(title); + } + if (body != null) { + mBodyText.setText(body); + } + } + + confirmButton.setOnClickListener(new View.OnClickListener() { + public void onClick(View view) { + mDbHelper.open(); + String title = mTitleText.getText().toString(); + String body = mBodyText.getText().toString(); + if (mRowId != null) { + mDbHelper.updateDiary(mRowId, title, body); + } else + mDbHelper.createDiary(title, body); + Intent mIntent = new Intent(); + setResult(RESULT_OK, mIntent); + mDbHelper.closeclose(); + finish(); + } + + }); + } +} diff --git a/app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903127/Net1314080903127_diary_activity.java b/app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903127/Net1314080903127_diary_activity.java new file mode 100644 index 00000000..2097779d --- /dev/null +++ b/app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903127/Net1314080903127_diary_activity.java @@ -0,0 +1,106 @@ +package edu.hzuapps.androidworks.homeworks.net1314080903127; + +import com.donglihan.CollegeLifeManager.R; + +import android.app.ListActivity; +import android.content.Intent; +import android.database.Cursor; +import android.os.Bundle; +import android.view.Menu; +import android.view.MenuItem; +import android.view.View; +import android.widget.ListView; +import android.widget.SimpleCursorAdapter; + +public class Net1314080903127_diary_activity extends ListActivity { + + //回复的关键字 + private static final int ACTIVITY_CREATE = 0; + private static final int ACTIVITY_EDIT = 1; + + //菜单的选择 + private static final int INSERT_ID = Menu.FIRST; + private static final int DELETE_ID = Menu.FIRST + 1; + + private Net1314080903127_DbAdapter mDbHelper; + private Cursor mDiaryCursor; + + @Override + public void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + setContentView(R.layout.net1314080903127_diary_list); + mDbHelper = new Net1314080903127_DbAdapter(this); + updateListView(); + + } + + //更新当前的listacvitity + private void updateListView() { + mDbHelper.open(); + mDiaryCursor = mDbHelper.getAllNotes(); + //交给Activity管理游标 + startManagingCursor(mDiaryCursor); + String[] from = new String[] { Net1314080903127_DbAdapter.KEY_TITLE, + Net1314080903127_DbAdapter.KEY_CREATED }; + int[] to = new int[] { R.id.text1, R.id.created }; + SimpleCursorAdapter notes = new SimpleCursorAdapter(this, + R.layout.net1314080903127_diary_row, mDiaryCursor, from, to); + setListAdapter(notes); + mDbHelper.closeclose(); + } + + //创建一个菜单 + @Override + public boolean onCreateOptionsMenu(Menu menu) { + super.onCreateOptionsMenu(menu); + menu.add(0, INSERT_ID, 0,"新建").setIcon(R.drawable.net1314080903127_new_course); + menu.add(0, DELETE_ID, 0, "删除").setIcon(R.drawable.net1314080903127_delete); + return true; + } + + //菜单选择 + @Override + public boolean onMenuItemSelected(int featureId, MenuItem item) { + switch (item.getItemId()) { + case INSERT_ID: + createDiary(); + return true; + case DELETE_ID: + mDbHelper.open(); + mDbHelper.deleteDiary(getListView().getSelectedItemId()); + mDbHelper.closeclose(); + updateListView(); + return true; + } + return super.onMenuItemSelected(featureId, item); + } + + private void createDiary() { + Intent i = new Intent(this, Net1314080903127_DiaryEditActivity.class); + startActivityForResult(i, ACTIVITY_CREATE); + } + + @Override + // 需要对position和id进行一个很好的区分 + // position指的是点击的这个ViewItem在当前ListView中的位置 + // 每一个和ViewItem绑定的数据，肯定都有一个id，通过这个id可以找到那条数据。 + protected void onListItemClick(ListView l, View v, int position, long id) { + super.onListItemClick(l, v, position, id); + Cursor c = mDiaryCursor; + c.moveToPosition(position); + Intent i = new Intent(this, Net1314080903127_DiaryEditActivity.class); + i.putExtra(Net1314080903127_DbAdapter.KEY_ROWID, id); + i.putExtra(Net1314080903127_DbAdapter.KEY_TITLE, c.getString(c + .getColumnIndexOrThrow(Net1314080903127_DbAdapter.KEY_TITLE))); + i.putExtra(Net1314080903127_DbAdapter.KEY_BODY, c.getString(c + .getColumnIndexOrThrow(Net1314080903127_DbAdapter.KEY_BODY))); + startActivityForResult(i, ACTIVITY_EDIT); + } + + @Override + protected void onActivityResult(int requestCode, int resultCode, + Intent intent) { + super.onActivityResult(requestCode, resultCode, intent); + updateListView(); + } +} diff --git a/app/src/main/res/layout/net1314080903127_diary_edit.xml b/app/src/main/res/layout/net1314080903127_diary_edit.xml new file mode 100644 index 00000000..dc7a8e0b --- /dev/null +++ b/app/src/main/res/layout/net1314080903127_diary_edit.xml @@ -0,0 +1,30 @@ + + + + + + + + + + + + + + +