Android Open Source - AndroidAsyncTaskLoaderSample Main Activity

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Back to project page AndroidAsyncTaskLoaderSample.

License

The source code is released under:

MIT License

Java Source Code

package com.tatuas.android.asynctaskloadersample;
/*from   ww  w .  j a  va 2 s. co  m*/
import com.example.asynctaskloadersample.R;

import android.support.v4.app.LoaderManager;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.Loader;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.Toast;

public class MainActivity extends FragmentActivity implements
        LoaderCallbacks<String> {
    public static final int LOADER_ID1 = 1;
    public static final int LOADER_ID2 = 2;
    public static final int LOADER_ID3 = 3;
    public static boolean choiceCountLoader = false;
    public static boolean isPausing = false;
    public ProgressBar bar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        LoaderManager.enableDebugLogging(true);

        if (getSupportLoaderManager().getLoader(LOADER_ID1) == null) {
            Toast.makeText(this, "start load1", Toast.LENGTH_LONG).show();
        }
        getSupportLoaderManager().initLoader(LOADER_ID1, null, this);

        bar = (ProgressBar) findViewById(R.id.progressBar1);
        bar.setMax(10);

        Button btn1 = (Button) findViewById(R.id.button1);
        btn1.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                getSupportLoaderManager().getLoader(LOADER_ID1).stopLoading();
                Toast.makeText(v.getContext(), "stop load1", Toast.LENGTH_LONG)
                        .show();
            }
        });

        Button btn2 = (Button) findViewById(R.id.button2);
        btn2.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                Bundle args1 = new Bundle();
                args1.putString("key", "load2");
                getSupportLoaderManager().initLoader(
                        LOADER_ID2,
                        args1,
                        (LoaderCallbacks<String>) ((FragmentActivity) v
                                .getContext()));
                Toast.makeText(v.getContext(), "start load2", Toast.LENGTH_LONG)
                        .show();
            }
        });

        Button btn3 = (Button) findViewById(R.id.button3);
        btn3.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                bar.setProgress(0);
                Bundle args1 = new Bundle();
                args1.putString("key", "load3");

                choiceCountLoader = true;
                getSupportLoaderManager().initLoader(
                        LOADER_ID3,
                        args1,
                        (LoaderCallbacks<String>) ((FragmentActivity) v
                                .getContext()));
                choiceCountLoader = false;

                Toast.makeText(v.getContext(), "start load3", Toast.LENGTH_LONG)
                        .show();
            }
        });

        Button btn4 = (Button) findViewById(R.id.button4);
        btn4.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                Loader<Object> loader = getSupportLoaderManager().getLoader(
                        LOADER_ID3);
                if (loader != null) {
                    loader.stopLoading();
                    loader.reset();
                }
                getSupportLoaderManager().destroyLoader(LOADER_ID3);
                Toast.makeText(v.getContext(), "stop load3", Toast.LENGTH_LONG)
                        .show();
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public Loader<String> onCreateLoader(int id, Bundle bundle) {
        String data = "non data ";

        if (bundle != null) {
            data = bundle.getString("key");
        }

        if (choiceCountLoader) {
            return new MyProgressCountLoader(this, data);
        } else {
            return new MyLoader(this, data);
        }
    }

    @Override
    public void onLoadFinished(Loader<String> loader, String result) {
        Toast.makeText(this, result, Toast.LENGTH_LONG).show();
    }

    @Override
    public void onLoaderReset(Loader<String> loader) {
        // add anything
    }

}

Java Source Code List

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