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- public class MainActivity extends Activity {
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- ArrayList<HashMap<String, String>>val1=new ArrayList<HashMap<String,String>>();
- HashMap<String, String>val=new HashMap<String,String>();
- val.put("a","a");
- val.put("c","c");
- val.put("b","b");
- val1.add(val);
- final ListView l=(ListView)findViewById(R.id.listView1);
- ListAdapter k=new SimpleAdapter(this,val1,R.layout.mytask,new String[]{"TaskId","heading","status"},new int[]{R.id.View1,R.id.View2,R.id.ViewStatus});
- Button b=(Button)findViewById(R.id.mytask);
- b.setOnClickListener(new OnClickListener() {
- @Override
- public void onClick(View arg0) {
- // TODO Auto-generated method stub
- Toast.makeText(MainActivity.this,"save",Toast.LENGTH_SHORT).show();
- }
- });
- l.setAdapter(k);
- }
- 04-07 01:43:07.075: E/AndroidRuntime(2113): FATAL EXCEPTION: main
- 04-07 01:43:07.075: E/AndroidRuntime(2113): Process: com.example.s, PID: 2113
- 04-07 01:43:07.075: E/AndroidRuntime(2113): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.s/com.example.s.MainActivity}: java.lang.NullPointerException
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at android.app.ActivityThread.access$800(ActivityThread.java:135)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at android.os.Handler.dispatchMessage(Handler.java:102)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at android.os.Looper.loop(Looper.java:136)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at android.app.ActivityThread.main(ActivityThread.java:5017)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at java.lang.reflect.Method.invokeNative(Native Method)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at java.lang.reflect.Method.invoke(Method.java:515)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at dalvik.system.NativeStart.main(Native Method)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): Caused by: java.lang.NullPointerException
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at com.example.s.MainActivity.onCreate(MainActivity.java:34)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at android.app.Activity.performCreate(Activity.java:5231)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
- 04-07 01:43:07.075: E/AndroidRuntime(2113): ... 11 more
- <?xml version="1.0" encoding="utf-8"?>
- <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:orientation="vertical"
- >
- <TextView
- android:id="@+id/textView1"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_alignParentLeft="true"
- android:layout_alignParentTop="true"
- android:layout_marginTop="18dp"
- android:text="Task Name:"
- android:textSize="15dp"
- android:textStyle="bold" />
- <TextView
- android:id="@+id/View1"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_alignParentLeft="true"
- android:layout_alignParentTop="true"
- android:text="TextView"
- android:textSize="15dp"
- android:textStyle="bold"
- android:visibility="invisible" />
- <TextView
- android:id="@+id/View2"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_alignBaseline="@+id/textView1"
- android:layout_alignBottom="@+id/textView1"
- android:layout_marginLeft="31dp"
- android:layout_toRightOf="@+id/textView1"
- android:text="TextView"
- android:textSize="15dp"
- android:textStyle="bold"
- android:visibility="visible" />
- <TextView
- android:id="@+id/ViewStatus"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_alignBaseline="@+id/View2"
- android:layout_alignBottom="@+id/View2"
- android:layout_alignParentRight="true"
- android:text="Pending"
- android:textSize="15dp"
- android:textStyle="bold" />
- <TextView
- android:id="@+id/textView2"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_alignBaseline="@+id/ViewStatus"
- android:layout_alignBottom="@+id/ViewStatus"
- android:layout_marginRight="14dp"
- android:layout_toLeftOf="@+id/ViewStatus"
- android:text="Status:"
- android:textSize="15dp"
- android:textStyle="bold" />
- <Button
- android:id="@+id/mytask"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_alignParentLeft="true"
- android:layout_below="@+id/textView1"
- android:text="Button" />
- </RelativeLayout>
- <ListView
- android:id="@+id/listView1"
- android:layout_width="match_parent"
- android:layout_height="wrap_content"
- android:layout_alignParentLeft="true"
- android:layout_alignParentTop="true"
- android:layout_marginLeft="106dp"
- android:layout_marginTop="124dp" >
- </ListView>
- SimpleAdapter k=new SimpleAdapter(this,val1,R.layout.mytask,new String[]{"a","c","b"},new int[]{R.id.View1,R.id.View2,R.id.ViewStatus})
- {
- @Override
- public View getView (int position, View convertView, ViewGroup parent)
- {
- View v = super.getView(position, convertView, parent);
- Button b=(Button)v.findViewById(R.id.mytask);
- b.setOnClickListener(new OnClickListener() {
- @Override
- public void onClick(View arg0) {
- // TODO Auto-generated method stub
- Toast.makeText(MainActivity.this,"save",Toast.LENGTH_SHORT).show();
- }
- });
- return v;
- }
- };
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