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POclick Button show error message in android
 

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  1. POclick Button show error message in android
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    <p>When I click Button show error message :unfortunately, learn has stopped what is error here</p> <p>button code:</p> <pre><code>Button btn=(Button)findViewById(R.id.btn); btn.setOnClickListener(new OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub Intent i1 = new Intent(v.getContext(),Letters.class); i1.putExtra("Ar", "a5"); startActivity(i1); } }); </code></pre> <p>and this is letters.java code:</p> <p>what is error and how fixed it.</p> <pre><code>package com.example.learn; import com.example.learn.R; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.widget.*; public class Letters extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_letters); ImageView image = new ImageView(this); RelativeLayout rl = (RelativeLayout) findViewById(R.id.relativelayout1); RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams( RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT); lp.addRule(RelativeLayout.BELOW); lp.addRule(RelativeLayout.ALIGN_PARENT_RIGHT); Bundle extras = getIntent().getExtras(); String Ar_let=extras.getString("Ar"); Toast.makeText(this, Ar_let, Toast.LENGTH_LONG).show(); if(Ar_let=="a1") { image = (ImageView) findViewById(R.id.imageView1); image.setImageResource(R.drawable.ar_a); rl.addView(image, lp); } else if(Ar_let=="a2") { image = (ImageView) findViewById(R.id.imageView2); image.setImageResource(R.drawable.ar_b); rl.addView(image, lp); } else if(Ar_let=="a3") { image = (ImageView) findViewById(R.id.imageView3); image.setImageResource(R.drawable.ar_c); rl.addView(image, lp); } else if(Ar_let=="a4") { image = (ImageView) findViewById(R.id.imageView4); image.setImageResource(R.drawable.ar4); rl.addView(image, lp); } else if(Ar_let=="a5") { image = (ImageView) findViewById(R.id.imageView5); image.setImageResource(R.drawable.ar5); rl.addView(image, lp); } else { image = (ImageView) findViewById(R.id.imageView5); image.setImageResource(R.drawable.ar5); rl.addView(image, lp); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.letters, menu); return true; } } </code></pre> <p>what is error please??!!</p> <p>I remove Letters.java and add again but the same thing</p>
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    1. This table or related slice is empty.
    1. PTQuestion
    1. USMohammad Rababah
    1. USMohammad Rababah
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    1. This table or related slice is empty.
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    2. PO
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    3. PO
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      1. This table or related slice is empty.
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    1. COAdd the logcat view and see the exact exception. If you still need help, paste the exception here. Most likely, looking at the code, you didn't declare the Letters activity in your AndroidManifest.xml
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      1. USIncrediApp
    2. CO<activity android:name="com.example.learn.Letters" android:label="@string/title_activity_letters" > </activity>
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      1. POclick Button show error message in android
      1. USMohammad Rababah
    3. COmessage exception: unfortunately, learn has stopped
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      1. POclick Button show error message in android
      1. USMohammad Rababah
 

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