为什么name和date未显示在editText上？活动流程为WorkDetailsTable＆gt;＆gt; DisplayData＆gt;＆gt; UpdatePage
我在tableListener中实施了DisplayData。按下该行后，它将转到Update.java
WorkDetailsTable.java
Button btn1 = (Button) findViewById(R.id.button2);
btn1.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
AlertDialog.Builder builder = new AlertDialog.Builder(WorkDetailsTable.this);
builder.setTitle("Data Saved");
builder.setMessage("Are you sure you want to save?");
builder.setIcon(android.R.drawable.ic_dialog_alert);
builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int ii) {
if ((i != null && i.trim().length() > 0)) {
long ab = ts.insertTimeSheet(name, weather, date, status,b,i);
long cf= WF.insertWorkForce(subContractors, noPeople, noHours, ab);
WD.insertWorkDetails(a1, W1, P1, b, c,cf);
WD.insertWorkDetails(a2, W2, P2, d, e1,cf);
WD.insertWorkDetails(a3, W3, P3, f, g,cf);
WD.insertWorkDetails(a4, W4, P4, h, i,cf);
WF.insertWorkForce(subContractors, noPeople, noHours,cf);
Toast.makeText(getApplicationContext(), "4 Row has value", Toast.LENGTH_LONG).show();
Intent intent=new
Intent(WorkDetailsTable.this,DisplayData.class);
intent.putExtra("name", name);
intent.putExtra("date",date);
startActivity(intent);
}
}
DisplayData.java
public class DisplayData extends AppCompatActivity {
TableLayout table_layout;
InfoAPI sqlcon;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.displaydata);
MyDatabaseHelper db = new MyDatabaseHelper(this);
InfoAPI I1 = new InfoAPI(this);
sqlcon = new InfoAPI(this);
//Table table=(TableLayout)findViewById(R.id.table)
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
table_layout = (TableLayout) findViewById(R.id.tableLayout1);
final String name1 = getIntent().getExtras().getString("name");
final String date=getIntent().getExtras().getString("date");
BuildTable(name1,date);
}
private void BuildTable(String name,String date1)
{
final String name2 = name;
final String date2=date1;
sqlcon.open();
Cursor c = sqlcon.readEntry(name2);
int rows = c.getCount();
int cols = c.getColumnCount();
c.moveToFirst();
TableRow rowDayLabels=new TableRow(this);
TextView weather=new TextView(this);
weather.setText("Weather");
weather.setTypeface(Typeface.SERIF, Typeface.BOLD);
TextView date=new TextView(this);
date.setText("Date");
date.setTypeface(Typeface.SERIF, Typeface.BOLD);
TextView status=new TextView(this);
status.setText("Status");
status.setTypeface(Typeface.SERIF, Typeface.BOLD);
TextView timeIn=new TextView(this);
timeIn.setText("Time In");
timeIn.setTypeface(Typeface.SERIF, Typeface.BOLD);
TextView timeOut=new TextView(this);
timeOut.setText("Time Out");
timeOut.setTypeface(Typeface.SERIF, Typeface.BOLD);
rowDayLabels.addView(weather);
rowDayLabels.addView(date);
rowDayLabels.addView(status);
rowDayLabels.addView(timeIn);
rowDayLabels.addView(timeOut);
table_layout.addView(rowDayLabels);
// outer for loop
for (int i = 0; i < rows; i++) {
TableRow row = new TableRow(this);
row.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
// inner for loop
for (int j = 0; j < cols; j++) {
TextView tv = new TextView(this);
tv.setLayoutParams(new TableRow.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT
));
// tv.setBackgroundResource(R.drawable.cell_shape);
tv.setGravity(Gravity.CENTER);
tv.setTextSize(18);
tv.setPadding(0, 5, 0, 5);
tv.setText(c.getString(j));
row.addView(tv);
row.setBackgroundResource(R.drawable.color);
row.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(DisplayData.this, UpdatePage.class);
intent.putExtra("name", name2);
intent.putExtra("date",date2);
startActivity(intent);
}
});
}
c.moveToNext();
table_layout.addView(row);
}
sqlcon.close();
}
}
UpdatePage.java
public class UpdatePage extends AppCompatActivity {
InfoAPI sqlcon;
private SQLiteDatabase database;
private MyDatabaseHelper dbHelper;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
dbHelper = new MyDatabaseHelper(this);
setContentView(R.layout.updatepage);
final String name1 = getIntent().getExtras().getString("name2");
final String date = getIntent().getExtras().getString("date2");
RetrievePage(name1, date);
}
public void RetrievePage(String name, String date) {
final String name2 = name;
final String date2 = date;
database = dbHelper.getWritableDatabase();
final EditText name3 = (EditText) findViewById(R.id.editText9);
final EditText date3 = (EditText) findViewById(R.id.editText12);
name3.setText(name2);
date3.setText(date2);
}
}
答案 0 :(得分：0)
当从WorkDetailsTable发送名称和日期＆gt;＆gt; DisplayData时，您正在使用密钥＆＃34; name＆＃34;和＆＃34;日期＆＃34;正确，用于保存和检索相同的密钥。
但是从DisplayData＆gt;＆gt; UpdatePage发送名称和日期时，您没有使用相同的密钥来保存和检索您的代码的显示内容
row.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(DisplayData.this, UpdatePage.class);
intent.putExtra("name", name2);
intent.putExtra("date",date2);
startActivity(intent);
}
});
在onCreate内的UpdatePage中
final String name1 = getIntent().getExtras().getString("name2");
final String date = getIntent().getExtras().getString("date2");
查看按键。例如＆＃34; name＆＃34;和＆＃34; name2＆＃34;所以使用相同的密钥 将代码更改为
final String name1 = getIntent().getExtras().getString("name");
final String date = getIntent().getExtras().getString("date");
然后检查您是否正在获取数据