file added

Rahul255 · Jul 1, 2019 · c3e90b5 · c3e90b5
1 parent d3ea489
commit c3e90b5
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diff --git a/AndroDatabase/app/src/main/java/com/example/andro_database/DatabaseHelper.java b/AndroDatabase/app/src/main/java/com/example/andro_database/DatabaseHelper.java
@@ -63,4 +63,8 @@ public  boolean updateData(String id, String name, String surname, String marks)
         db.update(TABLE_NAME, contentvalues, "ID = ?",new String[] {id});
         return true;
     }
+    public Integer deleteData (String id){
+        SQLiteDatabase db = this.getWritableDatabase();
+        return  db.delete(TABLE_NAME,"ID = ?",new String[] {id});
+    }
 }
diff --git a/AndroDatabase/app/src/main/java/com/example/andro_database/MainActivity.java b/AndroDatabase/app/src/main/java/com/example/andro_database/MainActivity.java
@@ -16,6 +16,7 @@ public class MainActivity extends AppCompatActivity {
     Button btnAddData;
     Button btnviewAll;
     Button btnviewUpdate;
+    Button btnDelete;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -30,9 +31,25 @@ protected void onCreate(Bundle savedInstanceState) {
         btnAddData=findViewById(R.id.button_add);
         btnviewAll=findViewById(R.id.button_view);
         btnviewUpdate=findViewById(R.id.button_update);
+        btnDelete=findViewById(R.id.button_delete);
         AddData();
         viewAll();
         UpdateData();
+        DeleteData();
+    }
+    public  void DeleteData(){
+        btnDelete.setOnClickListener(
+                new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        Integer deletedRows = myDb.deleteData(editTextId.getText().toString());
+                        if(deletedRows > 0)
+                            Toast.makeText(MainActivity.this,"Data Deleted",Toast.LENGTH_LONG).show();
+                        else
+                            Toast.makeText(MainActivity.this,"Data not Deleted",Toast.LENGTH_LONG).show();
+                    }
+                }
+        );
     }
 
     public  void UpdateData(){

diff --git a/AndroDatabase/app/src/main/res/layout/activity_main.xml b/AndroDatabase/app/src/main/res/layout/activity_main.xml
@@ -119,6 +119,13 @@
             android:text="Update"
             tools:layout_editor_absoluteX="161dp"
             tools:layout_editor_absoluteY="261dp" />
+        <Button
+            android:id="@+id/button_delete"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Delete"
+            tools:layout_editor_absoluteX="161dp"
+            tools:layout_editor_absoluteY="261dp" />
     </LinearLayout>