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+package com.thoitiet;%0A%0Aimport android.content.Intent;%0Aimport android.os.Bundle;%0Aimport android.support.v7.app.ActionBarActivity;%0Aimport android.view.Menu;%0Aimport android.view.MenuItem;%0Aimport android.view.View;%0Aimport android.view.View.OnClickListener;%0Aimport android.widget.Button;%0Aimport android.widget.EditText;%0Aimport android.widget.ImageView;%0Aimport android.widget.TextView;%0A%0A%0Apublic class ThoiThiet extends ActionBarActivity implements OnClickListener %7B%0A%0A%09private ImageView imgicon;%0A%09private EditText txtkey;%0A%09private Button btntim;%0A%09private TextView txt1;%0A%09private TextView txt2;%0A%09private TextView txt3;%0A%09private TextView txt4;%0A%09%0A%09@Override%0A%09protected void onCreate(Bundle savedInstanceState) %7B%0A%09%09super.onCreate(savedInstanceState);%0A%09%09setContentView(R.layout.activity_thoi_thiet);%0A%09%09initialize();%0A%09%7D%0A%09%0A%09private void initialize()%0A%09%7B%0A%09%09imgicon=(ImageView) findViewById(R.id.imgicon);%0A%09%09txtkey=(EditText)findViewById(R.id.txtkey);%0A%09%09btntim=(Button)findViewById(R.id.btntim);%0A%09%09txt1=(TextView) findViewById(R.id.txt1);%0A%09%09txt2=(TextView) findViewById(R.id.txt2);%0A%09%09txt3=(TextView) findViewById(R.id.txt3);%0A%09%09%0A%09%09btntim.setOnClickListener(this);%0A%09%7D%0A%09@Override%0A%09public boolean onCreateOptionsMenu(Menu menu) %7B%0A%0A%09%09// Inflate the menu; this adds items to the action bar if it is present.%0A%09%09getMenuInflater().inflate(R.menu.thoi_thiet, menu);%0A%09%09return true;%0A%09%7D%0A%0A%09@Override%0A%09public boolean onOptionsItemSelected(MenuItem item) %7B%0A%09%09switch(item.getItemId())%0A%09%09%7B%0A%09%09%09case R.id.gioithieu:%0A%09%09%09%09Intent gt=new Intent(%22com.thoitiet.gioithieu%22);%0A%09%09%09%09startActivity(gt);%0A%09%09%09%09break;%0A%09%09%09case R.id.caidat:%0A%09%09%09%09Intent cd=new Intent(%22com.thoitiet.caidat%22);%0A%09%09%09%09startActivity(cd);%0A%09%09%09%09break;%09%0A%09%09%7D%0A%09%09return false;%0A%09%7D%0A%09@Override%0A%09public void onClick(View v) %7B%0A%09%09switch(v.getId())%0A%09%09%7B%0A%09%09%09case R.id.btntim:%0A%09%09%09%09break;%0A%09%09%7D%0A%09%7D%0A%09%0A%7D%0A

Create ThoiThiet.java