当我单击MainActivity中的按钮以显示其他活动时，它不起作用

Question

Please I'm trying to create an activity with 6 buttons, and 6 textviews. Note that the problem gone when I click the button because it works when I tried to comment on block my code and just let this:

 super.onCreate(savedInstanceState);

 setContentView(R.layout.tasbih);

Her is my activity if you understand were the problem remains please help me:

public class Tasbih extends AppCompatActivity {
private TextView textView, textView2, textView6;
private Button button7, button8, button9, button10, button11, button12;
private int j = 0;
private int k = 0;
private int l = 0;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.tasbih);

 textView=(TextView) findViewById(R.id.textView);
    textView2=(TextView) findViewById(R.id.textView2);
    textView6=(TextView) findViewById(R.id.textView6);
    button7=(Button)findViewById(R.id.button7);
    button8=(Button)findViewById(R.id.button8);
    button9=(Button)findViewById(R.id.button9);
    button10=(Button)findViewById(R.id.button10);
    button11=(Button)findViewById(R.id.button11);
    button12=(Button)findViewById(R.id.button12);
    button7.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            j++;
            textView.setText(j);
        }
    }) ;
    button8.setOnClickListener(new View.OnClickListener() {
                                   @Override
                                   public void onClick(View v) {
                                       j=0;
                                       textView.setText(j);
                                   }
                               });
            button9.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    k++;
                    textView2.setText(k);
                }
            });
    button10.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            k=0;
            textView2.setText(k);
        }
    }) ;
    button11.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            l++;
            textView6.setText(l);
        }
    }) ;
    button12.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            l=0;
            textView6.setText(l);
        }
    }) ;

    final SharedPreferences sp= 
  PreferenceManager.getDefaultSharedPreferences(this);
    j = sp.getInt("j", 0);
    k = sp.getInt("k", 0);
    l = sp.getInt("l", 0);
    textView.setText(j);
    textView2.setText(k);
    textView6.setText(l);

    textView.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, 
          int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int 
            count) {

        }

        @Override
        public void afterTextChanged(Editable s) {
            SharedPreferences.Editor editor = sp.edit();
            editor.putInt("j", j).apply();
        }
    });



    textView2.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, 
   int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

        @Override
        public void afterTextChanged(Editable s) {
            SharedPreferences.Editor editor = sp.edit();
            editor.putInt("k", k).apply();
        }
    });



    textView6.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

        @Override
        public void afterTextChanged(Editable s) {
            SharedPreferences.Editor editor = sp.edit();
            editor.putInt("l", l).apply();
        }
    });
     }

@Override
protected void onPause() {
    super.onPause();

   /* SharedPreferences sp = getSharedPreferences("tasbih1", Context.MODE_PRIVATE);
    SharedPreferences.Editor editor = sp.edit();
    editor.putInt("j", j);
    editor.putInt("k", k);
    editor.putInt("l", l);
    editor.commit();*/

}

 } 

Where is the problem ?!

Answer 1

You can open other activity from current activity by intent. Like this.

You can add this line in your button click listner. Replace OtherActivity.class name to the class name of your other activity.

startActivity(new Intent(Tasbih.this,OtherActivity.class));